diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index f3af4d0..6ae2aa8 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -20,13 +20,13 @@ jobs:
       uses: shivammathur/setup-php@v2
       with:
         coverage: none
-        php-version: 8.2
+        php-version: 8.4
 
     - name: Cache Composer packages
       id: composer-cache
       uses: actions/cache@v3
       with:
-        php_version: 8.2
+        php_version: 8.4
         path: vendor
         key: ${{ runner.os }}
         restore-keys: |
diff --git a/composer.json b/composer.json
index c4417d5..ee5cdd6 100755
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": ">=8.2",
+        "php": ">=8.4",
         "micro/kernel-app": "^1.6",
         "micro/autowire": "^1.6",
         "micro/plugin-configuration-helper": "^1.6",
@@ -23,12 +23,12 @@
         "micro/plugin-twig-webpack-encore": "^1.6"
     },
     "require-dev": {
-        "ergebnis/composer-normalize": "^2.29",
-        "phpunit/phpunit": "^10.1",
-        "vimeo/psalm": "^5.15",
-        "phpstan/phpstan": "^1.10",
-        "friendsofphp/php-cs-fixer": "^3.13",
-        "phpunit/php-code-coverage": "^10.1"
+        "ergebnis/composer-normalize": "^2",
+        "phpunit/phpunit": "^12",
+        "vimeo/psalm": "^6",
+        "phpstan/phpstan": "^2",
+        "friendsofphp/php-cs-fixer": "^3",
+        "phpunit/php-code-coverage": "^12"
     },
     "autoload": {
         "psr-4": {
diff --git a/psalm.xml b/psalm.xml
index d95a6c8..321b8f7 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -14,14 +14,15 @@
     </projectFiles>
 
     <issueHandlers>
-        <UnnecessaryVarAnnotation>
+        <PossiblyUnusedMethod>
             <errorLevel type="suppress">
-                <directory name="src/"/>
+                <directory name="src/" />
             </errorLevel>
-        </UnnecessaryVarAnnotation>
-        <InaccessibleProperty>
+        </PossiblyUnusedMethod>
+        <UnusedClass>
             <errorLevel type="suppress">
+                <directory name="src/"/>
             </errorLevel>
-        </InaccessibleProperty>
+        </UnusedClass>
     </issueHandlers>
 </psalm>
diff --git a/src/Blog/BlogPlugin.php b/src/Blog/BlogPlugin.php
index 6717478..da28744 100644
--- a/src/Blog/BlogPlugin.php
+++ b/src/Blog/BlogPlugin.php
@@ -14,6 +14,7 @@ class BlogPlugin implements RouteProviderPluginInterface, TwigTemplatePluginInte
 {
     use TwigTemplatePluginTrait;
 
+    #[\Override]
     public function provideRoutes(HttpFacadeInterface $httpFacade): iterable
     {
         yield $httpFacade
diff --git a/src/Kernel.php b/src/Kernel.php
index 36b2254..6159a8a 100755
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -8,12 +8,12 @@
 
 $basedir = realpath(__DIR__.'/../');
 if (!$basedir) {
-    throw new \RuntimeException('Base path can not be resolved.');
+    throw new RuntimeException('Base path can not be resolved.');
 }
 
 require_once $basedir.'/vendor/autoload.php';
 
-return function () use ($basedir): \Micro\Framework\Kernel\KernelInterface {
+return function () use ($basedir): Micro\Framework\Kernel\KernelInterface {
     $applicationConfiguration = new class($basedir) extends DefaultApplicationConfiguration {
         private Dotenv $dotenv;
 
diff --git a/tests/tools/php-cs-fixer/composer.json b/tests/tools/php-cs-fixer/composer.json
index 45500a7..ce6eb43 100644
--- a/tests/tools/php-cs-fixer/composer.json
+++ b/tests/tools/php-cs-fixer/composer.json
@@ -1,5 +1,5 @@
 {
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.16"
+        "friendsofphp/php-cs-fixer": "^3"
     }
 }
diff --git a/tests/tools/phpstan/composer.json b/tests/tools/phpstan/composer.json
index 2216211..7e2c7b9 100644
--- a/tests/tools/phpstan/composer.json
+++ b/tests/tools/phpstan/composer.json
@@ -1,5 +1,5 @@
 {
     "require-dev": {
-        "phpstan/phpstan": "^1.10"
+        "phpstan/phpstan": "^2"
     }
 }
diff --git a/tests/tools/psalm/composer.json b/tests/tools/psalm/composer.json
index 9c35def..9356ebb 100644
--- a/tests/tools/psalm/composer.json
+++ b/tests/tools/psalm/composer.json
@@ -1,5 +1,5 @@
 {
     "require-dev": {
-        "vimeo/psalm": "^5.11"
+        "vimeo/psalm": "^6"
     }
 }