diff --git a/CHANGELOG.md b/CHANGELOG.md
index 81e720a..dfb83a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,7 @@
 - Bug #40: Refactor tests to use `assertSame()` for rendering with `testRenderWithGlobalDefaultsAreApplied()` and `testRenderWithUserOverridesGlobalDefaults()` (@terabytesoftw)
 - Enh #41: Add `InputImage` class for HTML `<input type="image">` element with attributes and rendering capabilities (@terabytesoftw)
 - Bug #42: Fix messages in `assert()` methods and code style (@terabytesoftw)
+- Bug #43: Update `ui-awesome/html-helper` to version `^0.7` and `ui-awesome/html-mixin` to version `^0.4` in `composer.json` and apply necessary changes to `src` and `tests` directories (@terabytesoftw)
 
 ## 0.3.0 March 31, 2024
 
diff --git a/composer.json b/composer.json
index 4e1f9f3..4622b28 100644
--- a/composer.json
+++ b/composer.json
@@ -12,10 +12,11 @@
     "require": {
         "php": "^8.1",
         "ext-mbstring": "*",
-        "ui-awesome/html-attribute": "dev-main as 0.5.2",
+        "ui-awesome/html-attribute": "^0.6@dev",
         "ui-awesome/html-core": "^0.6@dev",
-        "ui-awesome/html-helper": "^0.6",
-        "ui-awesome/html-interop": "^0.3"
+        "ui-awesome/html-helper": "^0.7",
+        "ui-awesome/html-interop": "^0.3",
+        "ui-awesome/html-mixin": "^0.4"
     },
     "require-dev": {
         "infection/infection": "^0.27|^0.32",
diff --git a/src/Embedded/Attribute/HasElementtiming.php b/src/Embedded/Attribute/HasElementtiming.php
index 6ede488..0ee622c 100644
--- a/src/Embedded/Attribute/HasElementtiming.php
+++ b/src/Embedded/Attribute/HasElementtiming.php
@@ -9,9 +9,7 @@
 /**
  * Provides an immutable API for the HTML `elementtiming` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/elementtiming
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -35,6 +33,6 @@ trait HasElementtiming
      */
     public function elementtiming(string|UnitEnum|null $value): static
     {
-        return $this->addAttribute('elementtiming', $value);
+        return $this->setAttribute('elementtiming', $value);
     }
 }
diff --git a/src/Embedded/Attribute/HasIsmap.php b/src/Embedded/Attribute/HasIsmap.php
index e69cfcc..c50b7c6 100644
--- a/src/Embedded/Attribute/HasIsmap.php
+++ b/src/Embedded/Attribute/HasIsmap.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `ismap` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/img#ismap
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -31,6 +29,6 @@ trait HasIsmap
      */
     public function ismap(bool $value): static
     {
-        return $this->addAttribute('ismap', $value);
+        return $this->setAttribute('ismap', $value);
     }
 }
diff --git a/src/Form/Attribute/HasFormaction.php b/src/Form/Attribute/HasFormaction.php
index f32ab33..9dde767 100644
--- a/src/Form/Attribute/HasFormaction.php
+++ b/src/Form/Attribute/HasFormaction.php
@@ -10,9 +10,7 @@
 /**
  * Provides an immutable API for the HTML `formaction` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/formaction
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -34,6 +32,6 @@ trait HasFormaction
      */
     public function formaction(string|Stringable|UnitEnum|null $value): static
     {
-        return $this->addAttribute('formaction', $value);
+        return $this->setAttribute('formaction', $value);
     }
 }
diff --git a/src/Form/Attribute/HasFormenctype.php b/src/Form/Attribute/HasFormenctype.php
index d450e22..ec5bb9a 100644
--- a/src/Form/Attribute/HasFormenctype.php
+++ b/src/Form/Attribute/HasFormenctype.php
@@ -10,9 +10,7 @@
 /**
  * Provides an immutable API for the HTML `formenctype` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/formenctype
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -35,6 +33,6 @@ trait HasFormenctype
      */
     public function formenctype(string|Stringable|UnitEnum|null $value): static
     {
-        return $this->addAttribute('formenctype', $value);
+        return $this->setAttribute('formenctype', $value);
     }
 }
diff --git a/src/Form/Attribute/HasFormmethod.php b/src/Form/Attribute/HasFormmethod.php
index ef7840b..701ac54 100644
--- a/src/Form/Attribute/HasFormmethod.php
+++ b/src/Form/Attribute/HasFormmethod.php
@@ -10,9 +10,7 @@
 /**
  * Provides an immutable API for the HTML `formmethod` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/formmethod
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -34,6 +32,6 @@ trait HasFormmethod
      */
     public function formmethod(string|Stringable|UnitEnum|null $value): static
     {
-        return $this->addAttribute('formmethod', $value);
+        return $this->setAttribute('formmethod', $value);
     }
 }
diff --git a/src/Form/Attribute/HasFormnovalidate.php b/src/Form/Attribute/HasFormnovalidate.php
index d180bb4..ded5421 100644
--- a/src/Form/Attribute/HasFormnovalidate.php
+++ b/src/Form/Attribute/HasFormnovalidate.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `formnovalidate` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/formnovalidate
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -31,6 +29,6 @@ trait HasFormnovalidate
      */
     public function formnovalidate(bool|null $value): static
     {
-        return $this->addAttribute('formnovalidate', $value);
+        return $this->setAttribute('formnovalidate', $value);
     }
 }
diff --git a/src/Form/Attribute/HasFormtarget.php b/src/Form/Attribute/HasFormtarget.php
index ccdd462..2fcaf21 100644
--- a/src/Form/Attribute/HasFormtarget.php
+++ b/src/Form/Attribute/HasFormtarget.php
@@ -10,9 +10,7 @@
 /**
  * Provides an immutable API for the HTML `formtarget` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/formtarget
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -35,6 +33,6 @@ trait HasFormtarget
      */
     public function formtarget(string|Stringable|UnitEnum|null $value): static
     {
-        return $this->addAttribute('formtarget', $value);
+        return $this->setAttribute('formtarget', $value);
     }
 }
diff --git a/src/Form/Base/BaseChoice.php b/src/Form/Base/BaseChoice.php
new file mode 100644
index 0000000..ef92adf
--- /dev/null
+++ b/src/Form/Base/BaseChoice.php
@@ -0,0 +1,115 @@
+<?php
+
+declare(strict_types=1);
+
+namespace UIAwesome\Html\Form\Base;
+
+use UIAwesome\Html\Attribute\Form\HasRequired;
+use UIAwesome\Html\Attribute\Global\{CanBeAutofocus, HasTabindex};
+use UIAwesome\Html\Attribute\HasValue;
+use UIAwesome\Html\Core\Element\BaseInput;
+use UIAwesome\Html\Core\Html;
+use UIAwesome\Html\Form\InputHidden;
+use UIAwesome\Html\Form\Mixin\{CanBeEnclosedByLabel, CanBeUnchecked, HasCheckedState};
+use UIAwesome\Html\Mixin\HasLabelCollection;
+use UIAwesome\Html\Phrasing\Label;
+
+use function array_key_exists;
+
+abstract class BaseChoice extends BaseInput
+{
+    use CanBeAutofocus;
+    use CanBeEnclosedByLabel;
+    use CanBeUnchecked;
+    use HasCheckedState;
+    use HasLabelCollection;
+    use HasRequired;
+    use HasTabindex;
+    use HasValue;
+
+    /**
+     * Returns the array of HTML attributes for the element.
+     *
+     * @return array Attributes array assigned to the element.
+     *
+     * @phpstan-return mixed[]
+     */
+    public function getAttributes(): array
+    {
+        return $this->buildAttributes(parent::getAttributes());
+    }
+
+    /**
+     * Renders the `<input>` element with its attributes.
+     *
+     * @return string Rendered HTML for the `<input>` element.
+     */
+    protected function run(): string
+    {
+        /** @var string|null $id */
+        $id = $this->getAttribute('id', null);
+
+        $unchecked = '';
+        $uncheckedValue = $this->getUncheckedValue();
+
+        if ($uncheckedValue !== null) {
+            /** @phpstan-var string $name */
+            $name = $this->getAttribute('name', '');
+
+            $unchecked = InputHidden::tag()
+                ->id(null)
+                ->name($name)
+                ->value($uncheckedValue)
+                ->render();
+        }
+
+        $label = $this->getLabel();
+
+        if ($this->isLabel() === false) {
+            return $this->buildElement(
+                '',
+                [
+                    '{label}' => '',
+                    '{unchecked}' => $unchecked,
+                ],
+            );
+        }
+
+        $labelAttributes = $this->getLabelAttributes();
+        $labelTag = Label::tag()->attributes($labelAttributes);
+
+        if ($this->enclosedByLabel === false) {
+            if (array_key_exists('for', $labelAttributes) === false) {
+                $labelTag = $labelTag->for($id);
+            }
+
+            $labelTag = $labelTag->content($label);
+
+            return $this->buildElement(
+                '',
+                [
+                    '{label}' => $labelTag,
+                    '{unchecked}' => $unchecked,
+                ],
+            );
+        }
+
+        $labelTag = $labelTag
+            ->html(
+                "\n",
+                Html::element($this->getTag(), '', $this->getAttributes()),
+                "\n",
+                $label,
+                "\n",
+            );
+
+        return $this->buildElement(
+            '',
+            [
+                '{tag}' => $labelTag,
+                '{label}' => '',
+                '{unchecked}' => $unchecked,
+            ],
+        );
+    }
+}
diff --git a/src/Form/InputCheckbox.php b/src/Form/InputCheckbox.php
index 7178533..0c8073f 100644
--- a/src/Form/InputCheckbox.php
+++ b/src/Form/InputCheckbox.php
@@ -4,19 +4,9 @@
 
 namespace UIAwesome\Html\Form;
 
-use Stringable;
-use UIAwesome\Html\Attribute\Form\HasRequired;
-use UIAwesome\Html\Attribute\Global\{CanBeAutofocus, HasTabindex};
-use UIAwesome\Html\Attribute\HasValue;
 use UIAwesome\Html\Attribute\Values\Type;
-use UIAwesome\Html\Core\Element\BaseInput;
-use UIAwesome\Html\Core\Html;
-use UIAwesome\Html\Form\Mixin\{CanBeEnclosedByLabel, HasCheckedState, HasLabel};
+use UIAwesome\Html\Form\Base\BaseChoice;
 use UIAwesome\Html\Interop\{VoidInterface, Voids};
-use UIAwesome\Html\Phrasing\Label;
-use UnitEnum;
-
-use function array_key_exists;
 
 /**
  * Represents the HTML `<input type="checkbox">` element.
@@ -38,52 +28,8 @@
  * @copyright Copyright (C) 2026 Terabytesoftw.
  * @license https://opensource.org/license/bsd-3-clause BSD 3-Clause License.
  */
-final class InputCheckbox extends BaseInput
+final class InputCheckbox extends BaseChoice
 {
-    use CanBeAutofocus;
-    use CanBeEnclosedByLabel;
-    use HasCheckedState;
-    use HasLabel;
-    use HasRequired;
-    use HasTabindex;
-    use HasValue;
-
-    /**
-     * Value to be submitted when the checkbox is not checked.
-     *
-     * If set, an additional hidden input will be rendered with the same name as the checkbox and this value.
-     *
-     * This ensures that a value is always submitted for the checkbox, even when it is unchecked.
-     */
-    private bool|float|int|string|Stringable|UnitEnum|null $uncheckedValue = null;
-
-    /**
-     * Returns the array of HTML attributes for the element.
-     *
-     * @return array Attributes array assigned to the element.
-     *
-     * @phpstan-return mixed[]
-     */
-    public function getAttributes(): array
-    {
-        return $this->buildAttributes(parent::getAttributes());
-    }
-
-    /**
-     * Set the value that should be submitted when the checkbox is not checked.
-     *
-     * @param bool|float|int|string|Stringable|UnitEnum|null $value Value to be submitted.
-     *
-     * @return static New instance with the updated `uncheckedValue` value.
-     */
-    public function uncheckedValue(bool|float|int|string|Stringable|UnitEnum|null $value): static
-    {
-        $new = clone $this;
-        $new->uncheckedValue = $value;
-
-        return $new;
-    }
-
     /**
      * Returns the tag enumeration for the `<input>` element.
      *
@@ -108,74 +54,4 @@ protected function loadDefault(): array
             'type' => [Type::CHECKBOX],
         ] + parent::loadDefault();
     }
-
-    /**
-     * Renders the `<input>` element with its attributes.
-     *
-     * @return string Rendered HTML for the `<input>` element.
-     */
-    protected function run(): string
-    {
-        /** @var string|null $id */
-        $id = $this->getAttribute('id', null);
-
-        $unchecked = '';
-
-        if ($this->uncheckedValue !== null) {
-            /** @phpstan-var string $name */
-            $name = $this->getAttribute('name', '');
-
-            $unchecked = InputHidden::tag()
-                ->id(null)
-                ->name($name)
-                ->value($this->uncheckedValue)
-                ->render();
-        }
-
-        if ($this->notLabel || $this->label === '') {
-            return $this->buildElement(
-                '',
-                [
-                    '{label}' => '',
-                    '{unchecked}' => $unchecked,
-                ],
-            );
-        }
-
-        $labelTag = Label::tag()->attributes($this->labelAttributes);
-
-        if ($this->enclosedByLabel === false) {
-            if (array_key_exists('for', $this->labelAttributes) === false) {
-                $labelTag = $labelTag->for($id);
-            }
-
-            $labelTag = $labelTag->content($this->label);
-
-            return $this->buildElement(
-                '',
-                [
-                    '{label}' => $labelTag,
-                    '{unchecked}' => $unchecked,
-                ],
-            );
-        }
-
-        $labelTag = $labelTag
-            ->html(
-                "\n",
-                Html::element($this->getTag(), '', $this->getAttributes()),
-                "\n",
-                $this->label,
-                "\n",
-            );
-
-        return $this->buildElement(
-            '',
-            [
-                '{tag}' => $labelTag,
-                '{label}' => '',
-                '{unchecked}' => $unchecked,
-            ],
-        );
-    }
 }
diff --git a/src/Form/InputRadio.php b/src/Form/InputRadio.php
index 5d3129a..9d56381 100644
--- a/src/Form/InputRadio.php
+++ b/src/Form/InputRadio.php
@@ -4,19 +4,9 @@
 
 namespace UIAwesome\Html\Form;
 
-use Stringable;
-use UIAwesome\Html\Attribute\Form\HasRequired;
-use UIAwesome\Html\Attribute\Global\{CanBeAutofocus, HasTabindex};
-use UIAwesome\Html\Attribute\HasValue;
 use UIAwesome\Html\Attribute\Values\Type;
-use UIAwesome\Html\Core\Element\BaseInput;
-use UIAwesome\Html\Core\Html;
-use UIAwesome\Html\Form\Mixin\{CanBeEnclosedByLabel, HasCheckedState, HasLabel};
+use UIAwesome\Html\Form\Base\BaseChoice;
 use UIAwesome\Html\Interop\{VoidInterface, Voids};
-use UIAwesome\Html\Phrasing\Label;
-use UnitEnum;
-
-use function array_key_exists;
 
 /**
  * Represents the HTML `<input type="radio">` element.
@@ -38,52 +28,8 @@
  * @copyright Copyright (C) 2026 Terabytesoftw.
  * @license https://opensource.org/license/bsd-3-clause BSD 3-Clause License.
  */
-final class InputRadio extends BaseInput
+final class InputRadio extends BaseChoice
 {
-    use CanBeAutofocus;
-    use CanBeEnclosedByLabel;
-    use HasCheckedState;
-    use HasLabel;
-    use HasRequired;
-    use HasTabindex;
-    use HasValue;
-
-    /**
-     * Value to be submitted when the radio is not checked.
-     *
-     * If set, an additional hidden input will be rendered with the same name as the radio and this value.
-     *
-     * This ensures that a value is always submitted for the radio, even when it is unchecked.
-     */
-    private bool|float|int|string|Stringable|UnitEnum|null $uncheckedValue = null;
-
-    /**
-     * Returns the array of HTML attributes for the element.
-     *
-     * @return array Attributes array assigned to the element.
-     *
-     * @phpstan-return mixed[]
-     */
-    public function getAttributes(): array
-    {
-        return $this->buildAttributes(parent::getAttributes());
-    }
-
-    /**
-     * Set the value that should be submitted when the radio is not checked.
-     *
-     * @param bool|float|int|string|Stringable|UnitEnum|null $value Value to be submitted.
-     *
-     * @return static New instance with the updated `uncheckedValue` value.
-     */
-    public function uncheckedValue(bool|float|int|string|Stringable|UnitEnum|null $value): static
-    {
-        $new = clone $this;
-        $new->uncheckedValue = $value;
-
-        return $new;
-    }
-
     /**
      * Returns the tag enumeration for the `<input>` element.
      *
@@ -108,68 +54,4 @@ protected function loadDefault(): array
             'type' => [Type::RADIO],
         ] + parent::loadDefault();
     }
-
-    /**
-     * Renders the `<input>` element with its attributes.
-     *
-     * @return string Rendered HTML for the `<input>` element.
-     */
-    protected function run(): string
-    {
-        /** @var string|null $id */
-        $id = $this->getAttribute('id', null);
-
-        $unchecked = '';
-
-        if ($this->uncheckedValue !== null) {
-            /** @phpstan-var string $name */
-            $name = $this->getAttribute('name', '');
-
-            $unchecked = InputHidden::tag()
-                ->id(null)
-                ->name($name)
-                ->value($this->uncheckedValue)
-                ->render();
-        }
-
-        if ($this->notLabel || $this->label === '') {
-            return $this->buildElement('', ['{label}' => '', '{unchecked}' => $unchecked]);
-        }
-
-        $labelTag = Label::tag()->attributes($this->labelAttributes);
-
-        if ($this->enclosedByLabel === false) {
-            if (array_key_exists('for', $this->labelAttributes) === false) {
-                $labelTag = $labelTag->for($id);
-            }
-
-            $labelTag = $labelTag->content($this->label);
-
-            return $this->buildElement(
-                '',
-                [
-                    '{label}' => $labelTag,
-                    '{unchecked}' => $unchecked,
-                ],
-            );
-        }
-
-        $labelTag = $labelTag
-            ->html(
-                "\n",
-                Html::element($this->getTag(), '', $this->getAttributes()),
-                "\n",
-                $this->label,
-                "\n",
-            );
-
-        return $this->buildElement(
-            '',
-            [
-                '{tag}' => $labelTag,
-                '{label}' => '',
-                '{unchecked}' => $unchecked,
-            ],
-        );
-    }
 }
diff --git a/src/Form/Mixin/CanBeUnchecked.php b/src/Form/Mixin/CanBeUnchecked.php
new file mode 100644
index 0000000..312014c
--- /dev/null
+++ b/src/Form/Mixin/CanBeUnchecked.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace UIAwesome\Html\Form\Mixin;
+
+use Stringable;
+use UnitEnum;
+
+/**
+ * Provides methods to configure whether the element can be unchecked.
+ *
+ * @copyright Copyright (C) 2026 Terabytesoftw.
+ * @license https://opensource.org/license/bsd-3-clause BSD 3-Clause License.
+ */
+trait CanBeUnchecked
+{
+    /**
+     * Value to be submitted when the element is not checked.
+     *
+     * If set, an additional hidden input will be rendered with the same name as the element and this value.
+     *
+     * This ensures that a value is always submitted for the element, even when it is unchecked.
+     */
+    private bool|float|int|string|Stringable|UnitEnum|null $uncheckedValue = null;
+
+    /**
+     * Set the value that should be submitted when the element is not checked.
+     *
+     * @param bool|float|int|string|Stringable|UnitEnum|null $value Value to be submitted.
+     *
+     * @return static New instance with the updated `uncheckedValue` value.
+     */
+    public function uncheckedValue(bool|float|int|string|Stringable|UnitEnum|null $value): static
+    {
+        $new = clone $this;
+        $new->uncheckedValue = $value;
+
+        return $new;
+    }
+
+    /**
+     * Get the value that should be submitted when the element is not checked.
+     *
+     * @return bool|float|int|string|Stringable|UnitEnum|null Value to be submitted.
+     */
+    private function getUncheckedValue(): bool|float|int|string|Stringable|UnitEnum|null
+    {
+        return $this->uncheckedValue;
+    }
+}
diff --git a/src/Form/Mixin/HasLabel.php b/src/Form/Mixin/HasLabel.php
deleted file mode 100644
index cd4ba2e..0000000
--- a/src/Form/Mixin/HasLabel.php
+++ /dev/null
@@ -1,155 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace UIAwesome\Html\Form\Mixin;
-
-use Stringable;
-use UIAwesome\Html\Helper\CSSClass;
-use UnitEnum;
-
-/**
- * Provides methods to configure the label for the input element.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/label
- *
- * @copyright Copyright (C) 2026 Terabytesoftw.
- * @license https://opensource.org/license/bsd-3-clause BSD 3-Clause License.
- */
-trait HasLabel
-{
-    /**
-     * Label content.
-     */
-    protected string $label = '';
-
-    /**
-     * Label attributes.
-     *
-     * @phpstan-var mixed[] $labelAttributes
-     */
-    protected array $labelAttributes = [];
-
-    /**
-     * Whether to render the label.
-     */
-    protected bool $notLabel = false;
-
-    /**
-     * Sets the label content.
-     *
-     * Usage example:
-     * ```php
-     * $element->label('My Label');
-     * ```
-     *
-     * @param string $content The label content.
-     *
-     * @return static New instance with the updated `label` value.
-     */
-    public function label(string $content): static
-    {
-        $new = clone $this;
-        $new->label = $content;
-
-        return $new;
-    }
-
-    /**
-     * Sets the label attributes.
-     *
-     * Usage example:
-     * ```php
-     * $element->labelAttributes(['class' => 'form-label']);
-     * ```
-     *
-     * @param array $attributes The label attributes.
-     *
-     * @return static New instance with the updated `labelAttributes` value.
-     *
-     * @phpstan-param mixed[] $attributes
-     */
-    public function labelAttributes(array $attributes): static
-    {
-        $new = clone $this;
-        $new->labelAttributes = $attributes;
-
-        return $new;
-    }
-
-    /**
-     * Sets the `class` attribute of the label.
-     *
-     * Usage example:
-     * ```php
-     * $element->labelClass('my-class');
-     * $element->labelClass(Theme::PRIMARY);
-     * $element->labelClass(
-     *     new class implements Stringable {
-     *         public function __toString(): string
-     *         {
-     *            return 'stringable-class';
-     *         }
-     *     },
-     * );
-     * $element->labelClass('another-class', true);
-     * $element->labelClass(null);
-     * ```
-     *
-     * @param string|Stringable|UnitEnum|null $value CSS class value, or `null` to remove the attribute.
-     * @param bool $override Whether to override existing classes (`true`) or merge (`false`).
-     *
-     * @return static New instance with the updated `labelAttributes['class']` value.
-     */
-    public function labelClass(string|Stringable|UnitEnum|null $value, bool $override = false): static
-    {
-        $new = clone $this;
-
-        if ($value === null) {
-            unset($new->labelAttributes['class']);
-        } else {
-            CSSClass::add($new->labelAttributes, $value, $override);
-        }
-
-        return $new;
-    }
-
-    /**
-     * Sets the `for` attribute of the label.
-     *
-     * Usage example:
-     * ```php
-     * $element->labelFor('input-id');
-     * $element->labelFor(null);
-     * ```
-     *
-     * @param string|null $value The value of the `for` attribute.
-     *
-     * @return static New instance with the updated `labelAttributes['for']` value.
-     */
-    public function labelFor(string|null $value): static
-    {
-        $new = clone $this;
-        $new->labelAttributes['for'] = $value;
-
-        return $new;
-    }
-
-    /**
-     * Disables the label rendering.
-     *
-     * Usage example:
-     * ```php
-     * $element->notLabel();
-     * ```
-     *
-     * @return static New instance with the updated `notLabel` value.
-     */
-    public function notLabel(): static
-    {
-        $new = clone $this;
-        $new->notLabel = true;
-
-        return $new;
-    }
-}
diff --git a/src/List/Attribute/HasReversed.php b/src/List/Attribute/HasReversed.php
index 750d3a1..7357a98 100644
--- a/src/List/Attribute/HasReversed.php
+++ b/src/List/Attribute/HasReversed.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `reversed` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/ol#reversed
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -31,6 +29,6 @@ trait HasReversed
      */
     public function reversed(bool $value): static
     {
-        return $this->addAttribute('reversed', $value);
+        return $this->setAttribute('reversed', $value);
     }
 }
diff --git a/src/List/Attribute/HasStart.php b/src/List/Attribute/HasStart.php
index 0fcb19d..d909b19 100644
--- a/src/List/Attribute/HasStart.php
+++ b/src/List/Attribute/HasStart.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `start` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/ol#start
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -32,6 +30,6 @@ trait HasStart
      */
     public function start(int|null $value): static
     {
-        return $this->addAttribute('start', $value);
+        return $this->setAttribute('start', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasAsync.php b/src/Metadata/Attribute/HasAsync.php
index a9a4e0a..24a42ef 100644
--- a/src/Metadata/Attribute/HasAsync.php
+++ b/src/Metadata/Attribute/HasAsync.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `async` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/script#async
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -34,6 +32,6 @@ trait HasAsync
      */
     public function async(bool $value): static
     {
-        return $this->addAttribute('async', $value);
+        return $this->setAttribute('async', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasDefer.php b/src/Metadata/Attribute/HasDefer.php
index 4ac5491..c57f6f8 100644
--- a/src/Metadata/Attribute/HasDefer.php
+++ b/src/Metadata/Attribute/HasDefer.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `defer` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/script#defer
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -34,6 +32,6 @@ trait HasDefer
      */
     public function defer(bool $value): static
     {
-        return $this->addAttribute('defer', $value);
+        return $this->setAttribute('defer', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasNomodule.php b/src/Metadata/Attribute/HasNomodule.php
index 5b57509..bbc9737 100644
--- a/src/Metadata/Attribute/HasNomodule.php
+++ b/src/Metadata/Attribute/HasNomodule.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `nomodule` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/script#nomodule
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -34,6 +32,6 @@ trait HasNomodule
      */
     public function nomodule(bool $value): static
     {
-        return $this->addAttribute('nomodule', $value);
+        return $this->setAttribute('nomodule', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasShadowRootClonable.php b/src/Metadata/Attribute/HasShadowRootClonable.php
index 80b7c01..7bc0124 100644
--- a/src/Metadata/Attribute/HasShadowRootClonable.php
+++ b/src/Metadata/Attribute/HasShadowRootClonable.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `shadowrootclonable` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/template#shadowrootclonable
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -33,6 +31,6 @@ trait HasShadowRootClonable
      */
     public function shadowRootClonable(bool $value): static
     {
-        return $this->addAttribute('shadowrootclonable', $value);
+        return $this->setAttribute('shadowrootclonable', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasShadowRootDelegatesFocus.php b/src/Metadata/Attribute/HasShadowRootDelegatesFocus.php
index 851a459..bcc0342 100644
--- a/src/Metadata/Attribute/HasShadowRootDelegatesFocus.php
+++ b/src/Metadata/Attribute/HasShadowRootDelegatesFocus.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `shadowrootdelegatesfocus` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/template#shadowrootdelegatesfocus
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -33,6 +31,6 @@ trait HasShadowRootDelegatesFocus
      */
     public function shadowRootDelegatesFocus(bool $value): static
     {
-        return $this->addAttribute('shadowrootdelegatesfocus', $value);
+        return $this->setAttribute('shadowrootdelegatesfocus', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasShadowRootMode.php b/src/Metadata/Attribute/HasShadowRootMode.php
index 3f1349d..33b3ace 100644
--- a/src/Metadata/Attribute/HasShadowRootMode.php
+++ b/src/Metadata/Attribute/HasShadowRootMode.php
@@ -12,9 +12,7 @@
 /**
  * Provides an immutable API for the HTML `shadowrootmode` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/template#shadowrootmode
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -44,6 +42,6 @@ public function shadowRootMode(string|UnitEnum|null $value): static
     {
         Validator::oneOf($value, ShadowRootMode::cases(), 'shadowrootmode');
 
-        return $this->addAttribute('shadowrootmode', $value);
+        return $this->setAttribute('shadowrootmode', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasShadowRootReferenceTarget.php b/src/Metadata/Attribute/HasShadowRootReferenceTarget.php
index 28c0734..49b5e25 100644
--- a/src/Metadata/Attribute/HasShadowRootReferenceTarget.php
+++ b/src/Metadata/Attribute/HasShadowRootReferenceTarget.php
@@ -10,9 +10,7 @@
 /**
  * Provides an immutable API for the HTML `shadowrootreferencetarget` attribute.
  *
- * @method static addAttribute(string|UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/template#shadowrootreferencetarget
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -36,6 +34,6 @@ trait HasShadowRootReferenceTarget
      */
     public function shadowRootReferenceTarget(string|Stringable|UnitEnum|null $value): static
     {
-        return $this->addAttribute('shadowrootreferencetarget', $value);
+        return $this->setAttribute('shadowrootreferencetarget', $value);
     }
 }
diff --git a/src/Metadata/Attribute/HasShadowRootSerializable.php b/src/Metadata/Attribute/HasShadowRootSerializable.php
index 18c98f9..083f094 100644
--- a/src/Metadata/Attribute/HasShadowRootSerializable.php
+++ b/src/Metadata/Attribute/HasShadowRootSerializable.php
@@ -7,9 +7,7 @@
 /**
  * Provides an immutable API for the HTML `shadowrootserializable` attribute.
  *
- * @method static addAttribute(string|\UnitEnum $key, mixed $value) Adds an attribute and returns a new instance.
- * {@see \UIAwesome\Html\Mixin\HasAttributes} for managing the underlying attributes array.
- *
+ * @mixin \UIAwesome\Html\Mixin\HasAttributes
  * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/template#shadowrootserializable
  *
  * @copyright Copyright (C) 2026 Terabytesoftw.
@@ -33,6 +31,6 @@ trait HasShadowRootSerializable
      */
     public function shadowRootSerializable(bool $value): static
     {
-        return $this->addAttribute('shadowrootserializable', $value);
+        return $this->setAttribute('shadowrootserializable', $value);
     }
 }
diff --git a/src/Phrasing/Label.php b/src/Phrasing/Label.php
index 1ff91cd..492f986 100644
--- a/src/Phrasing/Label.php
+++ b/src/Phrasing/Label.php
@@ -41,7 +41,7 @@ final class Label extends BaseInline
      */
     public function for(string|null $value = null): static
     {
-        return $this->addAttribute('for', $value);
+        return $this->setAttribute('for', $value);
     }
 
     /**
diff --git a/tests/Embedded/ImgTest.php b/tests/Embedded/ImgTest.php
index 1f1e4d8..c9c6853 100644
--- a/tests/Embedded/ImgTest.php
+++ b/tests/Embedded/ImgTest.php
@@ -60,7 +60,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Img::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -105,32 +105,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <img data-test="value">
-            HTML,
-            Img::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <img title="value">
-            HTML,
-            Img::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -557,7 +531,7 @@ public function testRenderWithRemoveAttribute(): void
             <img>
             HTML,
             Img::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -604,6 +578,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <img data-test="value">
+            HTML,
+            Img::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <img title="value">
+            HTML,
+            Img::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSizes(): void
     {
         self::assertSame(
diff --git a/tests/Flow/DivTest.php b/tests/Flow/DivTest.php
index 547b908..bd1c6eb 100644
--- a/tests/Flow/DivTest.php
+++ b/tests/Flow/DivTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Div::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <div data-test="value">
-            </div>
-            HTML,
-            Div::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <div title="value">
-            </div>
-            HTML,
-            Div::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </div>
             HTML,
             Div::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <div data-test="value">
+            </div>
+            HTML,
+            Div::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <div title="value">
+            </div>
+            HTML,
+            Div::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Flow/HrTest.php b/tests/Flow/HrTest.php
index b7fb0f4..ff93253 100644
--- a/tests/Flow/HrTest.php
+++ b/tests/Flow/HrTest.php
@@ -48,7 +48,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Hr::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -93,32 +93,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <hr data-test="value">
-            HTML,
-            Hr::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <hr title="value">
-            HTML,
-            Hr::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -350,7 +324,7 @@ public function testRenderWithRemoveAttribute(): void
             <hr>
             HTML,
             Hr::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -397,6 +371,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <hr data-test="value">
+            HTML,
+            Hr::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <hr title="value">
+            HTML,
+            Hr::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Flow/MainTest.php b/tests/Flow/MainTest.php
index 6556b8a..39ca699 100644
--- a/tests/Flow/MainTest.php
+++ b/tests/Flow/MainTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Main::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <main data-test="value">
-            </main>
-            HTML,
-            Main::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <main title="value">
-            </main>
-            HTML,
-            Main::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </main>
             HTML,
             Main::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <main data-test="value">
+            </main>
+            HTML,
+            Main::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <main title="value">
+            </main>
+            HTML,
+            Main::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Flow/PTest.php b/tests/Flow/PTest.php
index 3b90694..cb5ba85 100644
--- a/tests/Flow/PTest.php
+++ b/tests/Flow/PTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             P::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <p data-test="value">
-            </p>
-            HTML,
-            P::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <p title="value">
-            </p>
-            HTML,
-            P::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </p>
             HTML,
             P::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <p data-test="value">
+            </p>
+            HTML,
+            P::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <p title="value">
+            </p>
+            HTML,
+            P::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputCheckboxTest.php b/tests/Form/InputCheckboxTest.php
index e87778b..3bfde27 100644
--- a/tests/Form/InputCheckboxTest.php
+++ b/tests/Form/InputCheckboxTest.php
@@ -187,34 +187,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputcheckbox" type="checkbox" data-test="value">
-            HTML,
-            InputCheckbox::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputcheckbox')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputcheckbox" type="checkbox" title="Select checkbox">
-            HTML,
-            InputCheckbox::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select checkbox')
-                ->id('inputcheckbox')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -739,7 +711,7 @@ public function testRenderWithLabelClassNullValue(): void
         self::assertSame(
             <<<HTML
             <input id="inputcheckbox" type="checkbox">
-            <label for="inputcheckbox">Label</label>
+            <label class="value" for="inputcheckbox">Label</label>
             HTML,
             InputCheckbox::tag()
                 ->id('inputcheckbox')
@@ -912,7 +884,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputcheckbox" type="checkbox">
             HTML,
             InputCheckbox::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputcheckbox')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -977,6 +949,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputcheckbox" type="checkbox" data-test="value">
+            HTML,
+            InputCheckbox::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputcheckbox')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputcheckbox" type="checkbox" title="Select checkbox">
+            HTML,
+            InputCheckbox::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select checkbox')
+                ->id('inputcheckbox')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputHiddenTest.php b/tests/Form/InputHiddenTest.php
index 6d7ab8a..ebdd652 100644
--- a/tests/Form/InputHiddenTest.php
+++ b/tests/Form/InputHiddenTest.php
@@ -179,34 +179,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputhidden" type="hidden" data-test="value">
-            HTML,
-            InputHidden::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputhidden')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputhidden" type="hidden" title="Hidden input">
-            HTML,
-            InputHidden::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Hidden input')
-                ->id('inputhidden')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -603,7 +575,7 @@ public function testRenderWithRemoveAttribute(): void
             HTML,
             InputHidden::tag()
                 ->id('inputhidden')
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -653,6 +625,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputhidden" type="hidden" data-test="value">
+            HTML,
+            InputHidden::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputhidden')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputhidden" type="hidden" title="Hidden input">
+            HTML,
+            InputHidden::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Hidden input')
+                ->id('inputhidden')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputImageTest.php b/tests/Form/InputImageTest.php
index 2d59a6f..60795bf 100644
--- a/tests/Form/InputImageTest.php
+++ b/tests/Form/InputImageTest.php
@@ -181,34 +181,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputimage" type="image" data-test="value">
-            HTML,
-            InputImage::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputimage')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputimage" type="image" title="Select image">
-            HTML,
-            InputImage::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select image')
-                ->id('inputimage')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -674,7 +646,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputimage" type="image">
             HTML,
             InputImage::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputimage')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -725,6 +697,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputimage" type="image" data-test="value">
+            HTML,
+            InputImage::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputimage')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputimage" type="image" title="Select image">
+            HTML,
+            InputImage::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select image')
+                ->id('inputimage')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSrc(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputMonthTest.php b/tests/Form/InputMonthTest.php
index 24e94df..4bee7db 100644
--- a/tests/Form/InputMonthTest.php
+++ b/tests/Form/InputMonthTest.php
@@ -180,34 +180,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputmonth" type="month" data-test="value">
-            HTML,
-            InputMonth::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputmonth')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputmonth" type="month" title="Select month">
-            HTML,
-            InputMonth::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select month')
-                ->id('inputmonth')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -688,7 +660,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputmonth" type="month">
             HTML,
             InputMonth::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputmonth')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -753,6 +725,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputmonth" type="month" data-test="value">
+            HTML,
+            InputMonth::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputmonth')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputmonth" type="month" title="Select month">
+            HTML,
+            InputMonth::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select month')
+                ->id('inputmonth')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStep(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputNumberTest.php b/tests/Form/InputNumberTest.php
index 6742a33..f4ea285 100644
--- a/tests/Form/InputNumberTest.php
+++ b/tests/Form/InputNumberTest.php
@@ -181,34 +181,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputnumber" type="number" data-test="value">
-            HTML,
-            InputNumber::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputnumber')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputnumber" type="number" title="Select number">
-            HTML,
-            InputNumber::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select number')
-                ->id('inputnumber')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -703,7 +675,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputnumber" type="number">
             HTML,
             InputNumber::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputnumber')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -768,6 +740,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputnumber" type="number" data-test="value">
+            HTML,
+            InputNumber::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputnumber')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputnumber" type="number" title="Select number">
+            HTML,
+            InputNumber::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select number')
+                ->id('inputnumber')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStep(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputPasswordTest.php b/tests/Form/InputPasswordTest.php
index 153c9db..27c3d97 100644
--- a/tests/Form/InputPasswordTest.php
+++ b/tests/Form/InputPasswordTest.php
@@ -191,34 +191,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputpassword" type="password" data-test="value">
-            HTML,
-            InputPassword::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputpassword')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputpassword" type="password" title="Enter password">
-            HTML,
-            InputPassword::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Enter password')
-                ->id('inputpassword')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -727,7 +699,7 @@ public function testRenderWithRemoveAttribute(): void
             HTML,
             InputPassword::tag()
                 ->id('inputpassword')
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -791,6 +763,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputpassword" type="password" data-test="value">
+            HTML,
+            InputPassword::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputpassword')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputpassword" type="password" title="Enter password">
+            HTML,
+            InputPassword::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Enter password')
+                ->id('inputpassword')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSize(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputRadioTest.php b/tests/Form/InputRadioTest.php
index 5cf0d25..1e91026 100644
--- a/tests/Form/InputRadioTest.php
+++ b/tests/Form/InputRadioTest.php
@@ -189,34 +189,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputradio" type="radio" data-test="value">
-            HTML,
-            InputRadio::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputradio')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputradio" type="radio" title="Select radio">
-            HTML,
-            InputRadio::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select radio')
-                ->id('inputradio')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -748,7 +720,7 @@ public function testRenderWithLabelClassNullValue(): void
         self::assertSame(
             <<<HTML
             <input id="inputradio" type="radio">
-            <label for="inputradio">Label</label>
+            <label class="value" for="inputradio">Label</label>
             HTML,
             InputRadio::tag()
                 ->id('inputradio')
@@ -921,7 +893,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputradio" type="radio">
             HTML,
             InputRadio::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputradio')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -986,6 +958,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputradio" type="radio" data-test="value">
+            HTML,
+            InputRadio::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputradio')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputradio" type="radio" title="Select radio">
+            HTML,
+            InputRadio::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select radio')
+                ->id('inputradio')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputRangeTest.php b/tests/Form/InputRangeTest.php
index 5cd4e9c..f8c91fc 100644
--- a/tests/Form/InputRangeTest.php
+++ b/tests/Form/InputRangeTest.php
@@ -180,34 +180,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputrange" type="range" data-test="value">
-            HTML,
-            InputRange::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputrange')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputrange" type="range" title="Select range">
-            HTML,
-            InputRange::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select range')
-                ->id('inputrange')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -674,7 +646,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputrange" type="range">
             HTML,
             InputRange::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputrange')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -725,6 +697,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputrange" type="range" data-test="value">
+            HTML,
+            InputRange::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputrange')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputrange" type="range" title="Select range">
+            HTML,
+            InputRange::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select range')
+                ->id('inputrange')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStep(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputResetTest.php b/tests/Form/InputResetTest.php
index 14c115b..b14f9fe 100644
--- a/tests/Form/InputResetTest.php
+++ b/tests/Form/InputResetTest.php
@@ -180,34 +180,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputreset" type="reset" data-test="value">
-            HTML,
-            InputReset::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputreset')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputreset" type="reset" title="Reset form">
-            HTML,
-            InputReset::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Reset form')
-                ->id('inputreset')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -575,7 +547,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputreset" type="reset">
             HTML,
             InputReset::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputreset')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -626,6 +598,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputreset" type="reset" data-test="value">
+            HTML,
+            InputReset::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputreset')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputreset" type="reset" title="Reset form">
+            HTML,
+            InputReset::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Reset form')
+                ->id('inputreset')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputSearchTest.php b/tests/Form/InputSearchTest.php
index 0822a8e..4921a86 100644
--- a/tests/Form/InputSearchTest.php
+++ b/tests/Form/InputSearchTest.php
@@ -181,31 +181,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputsearch" type="search" data-test="value">
-            HTML,
-            InputSearch::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputsearch')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputsearch" type="search" title="Search here">
-            HTML,
-            InputSearch::tag()->id('inputsearch')->addAttribute(GlobalAttribute::TITLE, 'Search here')->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -634,7 +609,7 @@ public function testRenderWithRemoveAttribute(): void
             HTML,
             InputSearch::tag()
                 ->id('inputsearch')
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -689,6 +664,31 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputsearch" type="search" data-test="value">
+            HTML,
+            InputSearch::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputsearch')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputsearch" type="search" title="Search here">
+            HTML,
+            InputSearch::tag()->id('inputsearch')->setAttribute(GlobalAttribute::TITLE, 'Search here')->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSize(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputSubmitTest.php b/tests/Form/InputSubmitTest.php
index 5df585a..61fb795 100644
--- a/tests/Form/InputSubmitTest.php
+++ b/tests/Form/InputSubmitTest.php
@@ -180,34 +180,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputsubmit" type="submit" data-test="value">
-            HTML,
-            InputSubmit::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputsubmit')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputsubmit" type="submit" title="Submit action">
-            HTML,
-            InputSubmit::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Submit action')
-                ->id('inputsubmit')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -687,7 +659,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputsubmit" type="submit">
             HTML,
             InputSubmit::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputsubmit')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -738,6 +710,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputsubmit" type="submit" data-test="value">
+            HTML,
+            InputSubmit::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputsubmit')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputsubmit" type="submit" title="Submit action">
+            HTML,
+            InputSubmit::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Submit action')
+                ->id('inputsubmit')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputTelTest.php b/tests/Form/InputTelTest.php
index 0fd7133..d28403a 100644
--- a/tests/Form/InputTelTest.php
+++ b/tests/Form/InputTelTest.php
@@ -182,34 +182,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputtel" type="tel" data-test="value">
-            HTML,
-            InputTel::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputtel')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputtel" type="tel" title="Select phone">
-            HTML,
-            InputTel::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select phone')
-                ->id('inputtel')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -703,7 +675,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputtel" type="tel">
             HTML,
             InputTel::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputtel')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -768,6 +740,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputtel" type="tel" data-test="value">
+            HTML,
+            InputTel::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputtel')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputtel" type="tel" title="Select phone">
+            HTML,
+            InputTel::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select phone')
+                ->id('inputtel')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSize(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputTextTest.php b/tests/Form/InputTextTest.php
index 5c898b8..63bcc44 100644
--- a/tests/Form/InputTextTest.php
+++ b/tests/Form/InputTextTest.php
@@ -181,34 +181,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputtext" type="text" data-test="value">
-            HTML,
-            InputText::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputtext')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputtext" type="text" title="Enter text">
-            HTML,
-            InputText::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Enter text')
-                ->id('inputtext')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -716,7 +688,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputtext" type="text">
             HTML,
             InputText::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputtext')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -781,6 +753,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputtext" type="text" data-test="value">
+            HTML,
+            InputText::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputtext')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputtext" type="text" title="Enter text">
+            HTML,
+            InputText::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Enter text')
+                ->id('inputtext')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSize(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputTimeTest.php b/tests/Form/InputTimeTest.php
index eee4e0c..7322fd1 100644
--- a/tests/Form/InputTimeTest.php
+++ b/tests/Form/InputTimeTest.php
@@ -180,34 +180,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputtime" type="time" data-test="value">
-            HTML,
-            InputTime::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputtime')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputtime" type="time" title="Select time">
-            HTML,
-            InputTime::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select time')
-                ->id('inputtime')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -688,7 +660,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputtime" type="time">
             HTML,
             InputTime::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputtime')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -753,6 +725,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputtime" type="time" data-test="value">
+            HTML,
+            InputTime::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputtime')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputtime" type="time" title="Select time">
+            HTML,
+            InputTime::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select time')
+                ->id('inputtime')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStep(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputUrlTest.php b/tests/Form/InputUrlTest.php
index 6de5081..44cd4a4 100644
--- a/tests/Form/InputUrlTest.php
+++ b/tests/Form/InputUrlTest.php
@@ -182,34 +182,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputurl" type="url" data-test="value">
-            HTML,
-            InputUrl::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputurl')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputurl" type="url" title="Select url">
-            HTML,
-            InputUrl::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select url')
-                ->id('inputurl')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -703,7 +675,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputurl" type="url">
             HTML,
             InputUrl::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputurl')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -768,6 +740,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputurl" type="url" data-test="value">
+            HTML,
+            InputUrl::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputurl')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputurl" type="url" title="Select url">
+            HTML,
+            InputUrl::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select url')
+                ->id('inputurl')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSize(): void
     {
         self::assertSame(
diff --git a/tests/Form/InputWeekTest.php b/tests/Form/InputWeekTest.php
index 82491ef..2ee1b48 100644
--- a/tests/Form/InputWeekTest.php
+++ b/tests/Form/InputWeekTest.php
@@ -181,34 +181,6 @@ public function testRenderWithAddAriaDescribedByTrueStringValueAndPrefixSuffix()
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputweek" type="week" data-test="value">
-            HTML,
-            InputWeek::tag()
-                ->addAttribute('data-test', 'value')
-                ->id('inputweek')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <input id="inputweek" type="week" title="Select week">
-            HTML,
-            InputWeek::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Select week')
-                ->id('inputweek')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -687,7 +659,7 @@ public function testRenderWithRemoveAttribute(): void
             <input id="inputweek" type="week">
             HTML,
             InputWeek::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->id('inputweek')
                 ->removeAttribute('data-test')
                 ->render(),
@@ -752,6 +724,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputweek" type="week" data-test="value">
+            HTML,
+            InputWeek::tag()
+                ->setAttribute('data-test', 'value')
+                ->id('inputweek')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <input id="inputweek" type="week" title="Select week">
+            HTML,
+            InputWeek::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Select week')
+                ->id('inputweek')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStep(): void
     {
         self::assertSame(
diff --git a/tests/Heading/H1Test.php b/tests/Heading/H1Test.php
index ff07dc6..97fc106 100644
--- a/tests/Heading/H1Test.php
+++ b/tests/Heading/H1Test.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             H1::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h1 data-test="value">
-            </h1>
-            HTML,
-            H1::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h1 title="value">
-            </h1>
-            HTML,
-            H1::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </h1>
             HTML,
             H1::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h1 data-test="value">
+            </h1>
+            HTML,
+            H1::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h1 title="value">
+            </h1>
+            HTML,
+            H1::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Heading/H2Test.php b/tests/Heading/H2Test.php
index 9520107..19dd0bb 100644
--- a/tests/Heading/H2Test.php
+++ b/tests/Heading/H2Test.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             H2::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h2 data-test="value">
-            </h2>
-            HTML,
-            H2::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h2 title="value">
-            </h2>
-            HTML,
-            H2::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </h2>
             HTML,
             H2::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h2 data-test="value">
+            </h2>
+            HTML,
+            H2::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h2 title="value">
+            </h2>
+            HTML,
+            H2::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Heading/H3Test.php b/tests/Heading/H3Test.php
index 1896c43..3f3cdab 100644
--- a/tests/Heading/H3Test.php
+++ b/tests/Heading/H3Test.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             H3::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h3 data-test="value">
-            </h3>
-            HTML,
-            H3::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h3 title="value">
-            </h3>
-            HTML,
-            H3::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </h3>
             HTML,
             H3::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h3 data-test="value">
+            </h3>
+            HTML,
+            H3::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h3 title="value">
+            </h3>
+            HTML,
+            H3::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Heading/H4Test.php b/tests/Heading/H4Test.php
index f7e16a6..6ca1acf 100644
--- a/tests/Heading/H4Test.php
+++ b/tests/Heading/H4Test.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             H4::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h4 data-test="value">
-            </h4>
-            HTML,
-            H4::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h4 title="value">
-            </h4>
-            HTML,
-            H4::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </h4>
             HTML,
             H4::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h4 data-test="value">
+            </h4>
+            HTML,
+            H4::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h4 title="value">
+            </h4>
+            HTML,
+            H4::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Heading/H5Test.php b/tests/Heading/H5Test.php
index cbc86da..f151388 100644
--- a/tests/Heading/H5Test.php
+++ b/tests/Heading/H5Test.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             H5::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h5 data-test="value">
-            </h5>
-            HTML,
-            H5::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h5 title="value">
-            </h5>
-            HTML,
-            H5::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -505,7 +477,7 @@ public function testRenderWithRemoveAttribute(): void
             </h5>
             HTML,
             H5::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -555,6 +527,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h5 data-test="value">
+            </h5>
+            HTML,
+            H5::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h5 title="value">
+            </h5>
+            HTML,
+            H5::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Heading/H6Test.php b/tests/Heading/H6Test.php
index 9147936..647fa72 100644
--- a/tests/Heading/H6Test.php
+++ b/tests/Heading/H6Test.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             H6::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h6 data-test="value">
-            </h6>
-            HTML,
-            H6::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <h6 title="value">
-            </h6>
-            HTML,
-            H6::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </h6>
             HTML,
             H6::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h6 data-test="value">
+            </h6>
+            HTML,
+            H6::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <h6 title="value">
+            </h6>
+            HTML,
+            H6::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Heading/HGroupTest.php b/tests/Heading/HGroupTest.php
index 21721bc..53ca844 100644
--- a/tests/Heading/HGroupTest.php
+++ b/tests/Heading/HGroupTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             HGroup::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <hgroup data-test="value">
-            </hgroup>
-            HTML,
-            HGroup::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <hgroup title="value">
-            </hgroup>
-            HTML,
-            HGroup::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </hgroup>
             HTML,
             HGroup::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <hgroup data-test="value">
+            </hgroup>
+            HTML,
+            HGroup::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <hgroup title="value">
+            </hgroup>
+            HTML,
+            HGroup::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/List/DdTest.php b/tests/List/DdTest.php
index 26089cf..b03f3e2 100644
--- a/tests/List/DdTest.php
+++ b/tests/List/DdTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Dd::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <dd data-test="value">
-            </dd>
-            HTML,
-            Dd::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <dd title="value">
-            </dd>
-            HTML,
-            Dd::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </dd>
             HTML,
             Dd::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <dd data-test="value">
+            </dd>
+            HTML,
+            Dd::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <dd title="value">
+            </dd>
+            HTML,
+            Dd::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/List/DlTest.php b/tests/List/DlTest.php
index cf4060b..fa3c6fd 100644
--- a/tests/List/DlTest.php
+++ b/tests/List/DlTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Dl::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <dl data-test="value">
-            </dl>
-            HTML,
-            Dl::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <dl title="value">
-            </dl>
-            HTML,
-            Dl::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -570,7 +542,7 @@ public function testRenderWithRemoveAttribute(): void
             </dl>
             HTML,
             Dl::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -620,6 +592,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <dl data-test="value">
+            </dl>
+            HTML,
+            Dl::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <dl title="value">
+            </dl>
+            HTML,
+            Dl::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/List/DtTest.php b/tests/List/DtTest.php
index dafef19..0021f90 100644
--- a/tests/List/DtTest.php
+++ b/tests/List/DtTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Dt::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <dt data-test="value">
-            </dt>
-            HTML,
-            Dt::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <dt title="value">
-            </dt>
-            HTML,
-            Dt::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </dt>
             HTML,
             Dt::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <dt data-test="value">
+            </dt>
+            HTML,
+            Dt::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <dt title="value">
+            </dt>
+            HTML,
+            Dt::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/List/LiTest.php b/tests/List/LiTest.php
index 1a2eed2..513bff2 100644
--- a/tests/List/LiTest.php
+++ b/tests/List/LiTest.php
@@ -62,7 +62,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Li::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -125,34 +125,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <li data-test="value">
-            </li>
-            HTML,
-            Li::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <li title="value">
-            </li>
-            HTML,
-            Li::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -523,7 +495,7 @@ public function testRenderWithRemoveAttribute(): void
             </li>
             HTML,
             Li::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -573,6 +545,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <li data-test="value">
+            </li>
+            HTML,
+            Li::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <li title="value">
+            </li>
+            HTML,
+            Li::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/List/OlTest.php b/tests/List/OlTest.php
index 3d56eb9..986bd49 100644
--- a/tests/List/OlTest.php
+++ b/tests/List/OlTest.php
@@ -62,7 +62,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Ol::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -125,34 +125,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <ol data-test="value">
-            </ol>
-            HTML,
-            Ol::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <ol title="value">
-            </ol>
-            HTML,
-            Ol::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -571,7 +543,7 @@ public function testRenderWithRemoveAttribute(): void
             </ol>
             HTML,
             Ol::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -639,6 +611,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <ol data-test="value">
+            </ol>
+            HTML,
+            Ol::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <ol title="value">
+            </ol>
+            HTML,
+            Ol::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/List/UlTest.php b/tests/List/UlTest.php
index 432b26e..4564b28 100644
--- a/tests/List/UlTest.php
+++ b/tests/List/UlTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Ul::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <ul data-test="value">
-            </ul>
-            HTML,
-            Ul::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <ul title="value">
-            </ul>
-            HTML,
-            Ul::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -568,7 +540,7 @@ public function testRenderWithRemoveAttribute(): void
             </ul>
             HTML,
             Ul::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -618,6 +590,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <ul data-test="value">
+            </ul>
+            HTML,
+            Ul::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <ul title="value">
+            </ul>
+            HTML,
+            Ul::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/BaseTest.php b/tests/Metadata/BaseTest.php
index 36dfa20..d456a9b 100644
--- a/tests/Metadata/BaseTest.php
+++ b/tests/Metadata/BaseTest.php
@@ -54,7 +54,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Base::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -99,32 +99,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <base data-test="value">
-            HTML,
-            Base::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <base title="Base URL">
-            HTML,
-            Base::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Base URL')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -383,7 +357,7 @@ public function testRenderWithRemoveAttribute(): void
             <base>
             HTML,
             Base::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -430,6 +404,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <base data-test="value">
+            HTML,
+            Base::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <base title="Base URL">
+            HTML,
+            Base::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Base URL')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/LinkTest.php b/tests/Metadata/LinkTest.php
index 708e5e7..e202617 100644
--- a/tests/Metadata/LinkTest.php
+++ b/tests/Metadata/LinkTest.php
@@ -59,7 +59,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Link::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -104,32 +104,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <link data-test="value">
-            HTML,
-            Link::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <link title="Stylesheet">
-            HTML,
-            Link::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Stylesheet')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -596,7 +570,7 @@ public function testRenderWithRemoveAttribute(): void
             <link>
             HTML,
             Link::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -643,6 +617,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <link data-test="value">
+            HTML,
+            Link::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <link title="Stylesheet">
+            HTML,
+            Link::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Stylesheet')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSizes(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/MetaTest.php b/tests/Metadata/MetaTest.php
index c69c7f9..3491267 100644
--- a/tests/Metadata/MetaTest.php
+++ b/tests/Metadata/MetaTest.php
@@ -54,7 +54,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Meta::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -99,32 +99,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <meta data-test="value">
-            HTML,
-            Meta::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <meta title="Meta tag">
-            HTML,
-            Meta::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Meta tag')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -450,7 +424,7 @@ public function testRenderWithRemoveAttribute(): void
             <meta>
             HTML,
             Meta::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -495,6 +469,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <meta data-test="value">
+            HTML,
+            Meta::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <meta title="Meta tag">
+            HTML,
+            Meta::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Meta tag')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/NoScriptTest.php b/tests/Metadata/NoScriptTest.php
index 805b2a2..5c47971 100644
--- a/tests/Metadata/NoScriptTest.php
+++ b/tests/Metadata/NoScriptTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             NoScript::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <noscript data-test="value">
-            </noscript>
-            HTML,
-            NoScript::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <noscript title="Fallback content">
-            </noscript>
-            HTML,
-            NoScript::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Fallback content')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -518,7 +490,7 @@ public function testRenderWithRemoveAttribute(): void
             </noscript>
             HTML,
             NoScript::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -568,6 +540,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <noscript data-test="value">
+            </noscript>
+            HTML,
+            NoScript::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <noscript title="Fallback content">
+            </noscript>
+            HTML,
+            NoScript::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Fallback content')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/ScriptTest.php b/tests/Metadata/ScriptTest.php
index 284805b..63d1618 100644
--- a/tests/Metadata/ScriptTest.php
+++ b/tests/Metadata/ScriptTest.php
@@ -71,7 +71,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Script::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -134,34 +134,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <script data-test="value">
-            </script>
-            HTML,
-            Script::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <script title="value">
-            </script>
-            HTML,
-            Script::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -697,7 +669,7 @@ public function testRenderWithRemoveAttribute(): void
             </script>
             HTML,
             Script::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -747,6 +719,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <script data-test="value">
+            </script>
+            HTML,
+            Script::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <script title="value">
+            </script>
+            HTML,
+            Script::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/StyleTest.php b/tests/Metadata/StyleTest.php
index 491aebb..eb3ab1b 100644
--- a/tests/Metadata/StyleTest.php
+++ b/tests/Metadata/StyleTest.php
@@ -67,7 +67,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Style::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -130,34 +130,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <style data-test="value">
-            </style>
-            HTML,
-            Style::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <style title="value">
-            </style>
-            HTML,
-            Style::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -581,7 +553,7 @@ public function testRenderWithRemoveAttribute(): void
             </style>
             HTML,
             Style::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -631,6 +603,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <style data-test="value">
+            </style>
+            HTML,
+            Style::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <style title="value">
+            </style>
+            HTML,
+            Style::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/TemplateTest.php b/tests/Metadata/TemplateTest.php
index 407df0c..5da1926 100644
--- a/tests/Metadata/TemplateTest.php
+++ b/tests/Metadata/TemplateTest.php
@@ -68,7 +68,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Template::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -131,34 +131,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <template data-test="value">
-            </template>
-            HTML,
-            Template::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <template title="value">
-            </template>
-            HTML,
-            Template::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -526,7 +498,7 @@ public function testRenderWithRemoveAttribute(): void
             </template>
             HTML,
             Template::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -576,6 +548,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <template data-test="value">
+            </template>
+            HTML,
+            Template::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <template title="value">
+            </template>
+            HTML,
+            Template::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithShadowRootClonable(): void
     {
         self::assertSame(
diff --git a/tests/Metadata/TitleTest.php b/tests/Metadata/TitleTest.php
index 8cd6670..b3fa921 100644
--- a/tests/Metadata/TitleTest.php
+++ b/tests/Metadata/TitleTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Title::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <title data-test="value">
-            </title>
-            HTML,
-            Title::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <title title="value">
-            </title>
-            HTML,
-            Title::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -519,7 +491,7 @@ public function testRenderWithRemoveAttribute(): void
             </title>
             HTML,
             Title::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -569,6 +541,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <title data-test="value">
+            </title>
+            HTML,
+            Title::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <title title="value">
+            </title>
+            HTML,
+            Title::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Palpable/ATest.php b/tests/Palpable/ATest.php
index 855253c..6c1d938 100644
--- a/tests/Palpable/ATest.php
+++ b/tests/Palpable/ATest.php
@@ -67,7 +67,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             A::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -125,32 +125,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <a data-test="value"></a>
-            HTML,
-            A::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <a title="Link content"></a>
-            HTML,
-            A::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Link content')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -527,7 +501,7 @@ public function testRenderWithRemoveAttribute(): void
             <a></a>
             HTML,
             A::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -574,6 +548,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <a data-test="value"></a>
+            HTML,
+            A::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <a title="Link content"></a>
+            HTML,
+            A::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Link content')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Phrasing/ITest.php b/tests/Phrasing/ITest.php
index 49b6d65..c084174 100644
--- a/tests/Phrasing/ITest.php
+++ b/tests/Phrasing/ITest.php
@@ -59,7 +59,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             I::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -117,32 +117,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <i data-test="value"></i>
-            HTML,
-            I::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <i title="Idiomatic text"></i>
-            HTML,
-            I::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Idiomatic text')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -389,7 +363,7 @@ public function testRenderWithRemoveAttribute(): void
             <i></i>
             HTML,
             I::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -436,6 +410,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <i data-test="value"></i>
+            HTML,
+            I::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <i title="Idiomatic text"></i>
+            HTML,
+            I::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Idiomatic text')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Phrasing/LabelTest.php b/tests/Phrasing/LabelTest.php
index efb4b3e..091cc78 100644
--- a/tests/Phrasing/LabelTest.php
+++ b/tests/Phrasing/LabelTest.php
@@ -59,7 +59,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Label::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -117,32 +117,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <label data-test="value"></label>
-            HTML,
-            Label::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <label title="Label content"></label>
-            HTML,
-            Label::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Label content')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -402,7 +376,7 @@ public function testRenderWithRemoveAttribute(): void
             <label></label>
             HTML,
             Label::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -449,6 +423,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <label data-test="value"></label>
+            HTML,
+            Label::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <label title="Label content"></label>
+            HTML,
+            Label::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Label content')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Phrasing/SpanTest.php b/tests/Phrasing/SpanTest.php
index 1fbcc93..752d7e9 100644
--- a/tests/Phrasing/SpanTest.php
+++ b/tests/Phrasing/SpanTest.php
@@ -59,7 +59,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Span::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -115,32 +115,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <span data-test="value"></span>
-            HTML,
-            Span::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <span title="Span content"></span>
-            HTML,
-            Span::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'Span content')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -387,7 +361,7 @@ public function testRenderWithRemoveAttribute(): void
             <span></span>
             HTML,
             Span::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -434,6 +408,32 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <span data-test="value"></span>
+            HTML,
+            Span::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <span title="Span content"></span>
+            HTML,
+            Span::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'Span content')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithStyle(): void
     {
         self::assertSame(
diff --git a/tests/Root/BodyTest.php b/tests/Root/BodyTest.php
index 9b15e5b..ea10900 100644
--- a/tests/Root/BodyTest.php
+++ b/tests/Root/BodyTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Body::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <body data-test="value">
-            </body>
-            HTML,
-            Body::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <body title="value">
-            </body>
-            HTML,
-            Body::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </body>
             HTML,
             Body::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <body data-test="value">
+            </body>
+            HTML,
+            Body::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <body title="value">
+            </body>
+            HTML,
+            Body::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Root/FooterTest.php b/tests/Root/FooterTest.php
index 5e84ae9..1aef3f6 100644
--- a/tests/Root/FooterTest.php
+++ b/tests/Root/FooterTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Footer::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <footer data-test="value">
-            </footer>
-            HTML,
-            Footer::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <footer title="value">
-            </footer>
-            HTML,
-            Footer::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </footer>
             HTML,
             Footer::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <footer data-test="value">
+            </footer>
+            HTML,
+            Footer::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <footer title="value">
+            </footer>
+            HTML,
+            Footer::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Root/HeadTest.php b/tests/Root/HeadTest.php
index b5f5b5b..a467830 100644
--- a/tests/Root/HeadTest.php
+++ b/tests/Root/HeadTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Head::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <head data-test="value">
-            </head>
-            HTML,
-            Head::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <head title="value">
-            </head>
-            HTML,
-            Head::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </head>
             HTML,
             Head::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <head data-test="value">
+            </head>
+            HTML,
+            Head::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <head title="value">
+            </head>
+            HTML,
+            Head::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Root/HeaderTest.php b/tests/Root/HeaderTest.php
index d0470cf..6e9a0aa 100644
--- a/tests/Root/HeaderTest.php
+++ b/tests/Root/HeaderTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Header::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <header data-test="value">
-            </header>
-            HTML,
-            Header::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <header title="value">
-            </header>
-            HTML,
-            Header::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </header>
             HTML,
             Header::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <header data-test="value">
+            </header>
+            HTML,
+            Header::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <header title="value">
+            </header>
+            HTML,
+            Header::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Root/HtmlTest.php b/tests/Root/HtmlTest.php
index 5e1f348..2f7b721 100644
--- a/tests/Root/HtmlTest.php
+++ b/tests/Root/HtmlTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Html::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <html data-test="value">
-            </html>
-            HTML,
-            Html::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <html title="value">
-            </html>
-            HTML,
-            Html::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </html>
             HTML,
             Html::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <html data-test="value">
+            </html>
+            HTML,
+            Html::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <html title="value">
+            </html>
+            HTML,
+            Html::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Sectioning/ArticleTest.php b/tests/Sectioning/ArticleTest.php
index 3558649..4967c80 100644
--- a/tests/Sectioning/ArticleTest.php
+++ b/tests/Sectioning/ArticleTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Article::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <article data-test="value">
-            </article>
-            HTML,
-            Article::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <article title="value">
-            </article>
-            HTML,
-            Article::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </article>
             HTML,
             Article::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <article data-test="value">
+            </article>
+            HTML,
+            Article::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <article title="value">
+            </article>
+            HTML,
+            Article::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Sectioning/AsideTest.php b/tests/Sectioning/AsideTest.php
index 0fc448e..7f4c7fe 100644
--- a/tests/Sectioning/AsideTest.php
+++ b/tests/Sectioning/AsideTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Aside::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <aside data-test="value">
-            </aside>
-            HTML,
-            Aside::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <aside title="value">
-            </aside>
-            HTML,
-            Aside::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </aside>
             HTML,
             Aside::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <aside data-test="value">
+            </aside>
+            HTML,
+            Aside::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <aside title="value">
+            </aside>
+            HTML,
+            Aside::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Sectioning/NavTest.php b/tests/Sectioning/NavTest.php
index 1afd8d2..ef67fe8 100644
--- a/tests/Sectioning/NavTest.php
+++ b/tests/Sectioning/NavTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Nav::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <nav data-test="value">
-            </nav>
-            HTML,
-            Nav::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <nav title="value">
-            </nav>
-            HTML,
-            Nav::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </nav>
             HTML,
             Nav::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <nav data-test="value">
+            </nav>
+            HTML,
+            Nav::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <nav title="value">
+            </nav>
+            HTML,
+            Nav::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(
diff --git a/tests/Sectioning/SectionTest.php b/tests/Sectioning/SectionTest.php
index fd5c210..bcee112 100644
--- a/tests/Sectioning/SectionTest.php
+++ b/tests/Sectioning/SectionTest.php
@@ -61,7 +61,7 @@ public function testGetAttributesReturnsAssignedAttributes(): void
         self::assertSame(
             ['data-test' => 'value'],
             Section::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->getAttributes(),
             "Failed asserting that 'getAttributes()' returns the assigned attributes.",
         );
@@ -124,34 +124,6 @@ public function testRenderWithAddAriaAttributeUsingEnum(): void
         );
     }
 
-    public function testRenderWithAddAttribute(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <section data-test="value">
-            </section>
-            HTML,
-            Section::tag()
-                ->addAttribute('data-test', 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method.",
-        );
-    }
-
-    public function testRenderWithAddAttributeUsingEnum(): void
-    {
-        self::assertSame(
-            <<<HTML
-            <section title="value">
-            </section>
-            HTML,
-            Section::tag()
-                ->addAttribute(GlobalAttribute::TITLE, 'value')
-                ->render(),
-            "Failed asserting that element renders correctly with 'addAttribute()' method using enum.",
-        );
-    }
-
     public function testRenderWithAddDataAttribute(): void
     {
         self::assertSame(
@@ -507,7 +479,7 @@ public function testRenderWithRemoveAttribute(): void
             </section>
             HTML,
             Section::tag()
-                ->addAttribute('data-test', 'value')
+                ->setAttribute('data-test', 'value')
                 ->removeAttribute('data-test')
                 ->render(),
             "Failed asserting that element renders correctly with 'removeAttribute()' method.",
@@ -557,6 +529,34 @@ public function testRenderWithRoleUsingEnum(): void
         );
     }
 
+    public function testRenderWithSetAttribute(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <section data-test="value">
+            </section>
+            HTML,
+            Section::tag()
+                ->setAttribute('data-test', 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method.",
+        );
+    }
+
+    public function testRenderWithSetAttributeUsingEnum(): void
+    {
+        self::assertSame(
+            <<<HTML
+            <section title="value">
+            </section>
+            HTML,
+            Section::tag()
+                ->setAttribute(GlobalAttribute::TITLE, 'value')
+                ->render(),
+            "Failed asserting that element renders correctly with 'setAttribute()' method using enum.",
+        );
+    }
+
     public function testRenderWithSpellcheck(): void
     {
         self::assertSame(