diff --git a/README.md b/README.md
index 1124346..45d59a8 100644
--- a/README.md
+++ b/README.md
@@ -160,11 +160,20 @@ $transfer = $reg->transfer($domain, 'authcode', [$contact]);
 
 ```
 
+### Update Auto-Renew
+```php
+use Utopia\Domains\Registrar\UpdateDetails;
+
+$details = new UpdateDetails(autoRenew: true);
+$reg->updateDomain($domain, $details);
+```
+
 ## Library Registrar API
 * **available(string $domain): bool** - Checks to see if a domain is available for registration.
 * **purchase(string $domain, array|Contact $contacts, int $periodYears = 1, array $nameservers = []): Registration** - Purchase a domain name and returns a Registration object.
 * **suggest(array $query, array $tlds = [], int|null $limit = null, int|null $priceMax = null, int|null $priceMin = null): array** - Suggest or search for domain names.
 * **getDomain(string $domain): Domain** - Get domain details and returns a Domain object.
+* **updateDomain(string $domain, UpdateDetails $details): bool** - Update domain details such as auto-renew.
 * **renew(string $domain, int $periodYears): Renewal** - Renewal a domain name and returns a Renewal object.
 * **transfer(string $domain, string $authCode, array|Contact $contacts, int $periodYears = 1, array $nameservers = []): Registration** - Transfer a domain name and returns a Registration object.
 * **getAuthCode(string $domain): string** - Retrieve the authorization code for a domain.
diff --git a/src/Domains/Registrar/Adapter/Mock.php b/src/Domains/Registrar/Adapter/Mock.php
index acdb543..6dae736 100644
--- a/src/Domains/Registrar/Adapter/Mock.php
+++ b/src/Domains/Registrar/Adapter/Mock.php
@@ -337,7 +337,6 @@ public function renew(string $domain, int $periodYears): Renewal
      * @param UpdateDetails $details
      * @return bool
      * @throws DomainsException
-     * @throws InvalidContactException
      */
     public function updateDomain(string $domain, UpdateDetails $details): bool
     {
@@ -345,12 +344,8 @@ public function updateDomain(string $domain, UpdateDetails $details): bool
             throw new DomainsException("Domain {$domain} not found in mock registry", self::RESPONSE_CODE_NOT_FOUND);
         }
 
-        // Extract details from UpdateDetails object
-        $detailsArray = $details->toArray();
-
-        // Validate contacts if present
-        if (isset($detailsArray['contacts']) && $detailsArray['contacts']) {
-            $this->validateContacts($detailsArray['contacts']);
+        if ($details->autoRenew === null) {
+            throw new DomainsException('Details must include autoRenew', 400);
         }
 
         return true;
diff --git a/src/Domains/Registrar/Adapter/Mock/UpdateDetails.php b/src/Domains/Registrar/Adapter/Mock/UpdateDetails.php
deleted file mode 100644
index 671c09a..0000000
--- a/src/Domains/Registrar/Adapter/Mock/UpdateDetails.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-namespace Utopia\Domains\Registrar\Adapter\Mock;
-
-use Utopia\Domains\Registrar\UpdateDetails as BaseUpdateDetails;
-use Utopia\Domains\Registrar\Contact;
-
-class UpdateDetails extends BaseUpdateDetails
-{
-    /**
-     * @param array<string,mixed>|null $details Domain details to update (e.g., autoRenew, locked)
-     * @param array<string,Contact>|Contact|null $contacts Contacts to update
-     */
-    public function __construct(
-        public ?array $details = null,
-        public array|Contact|null $contacts = null,
-    ) {
-    }
-
-    public function toArray(): array
-    {
-        $result = [];
-
-        if ($this->details !== null) {
-            $result = array_merge($result, $this->details);
-        }
-
-        if ($this->contacts !== null) {
-            $result['contacts'] = $this->contacts;
-        }
-
-        return $result;
-    }
-}
diff --git a/src/Domains/Registrar/Adapter/NameCom.php b/src/Domains/Registrar/Adapter/NameCom.php
index 39fd603..530ee63 100644
--- a/src/Domains/Registrar/Adapter/NameCom.php
+++ b/src/Domains/Registrar/Adapter/NameCom.php
@@ -420,10 +420,8 @@ public function getDomain(string $domain): Domain
      *
      * Example request:
      * <code>
-     * $details = new NameComUpdateDetails(
-     *     autorenewEnabled: true,
-     *     privacyEnabled: true,
-     *     locked: false
+     * $details = new UpdateDetails(
+     *     autoRenew: true
      * );
      * $reg->updateDomain('example.com', $details);
      * </code>
@@ -437,10 +435,14 @@ public function getDomain(string $domain): Domain
     public function updateDomain(string $domain, UpdateDetails $details): bool
     {
         try {
-            $data = $details->toArray();
+            $data = [];
+            if ($details->autoRenew !== null) {
+                $data['autorenewEnabled'] = $details->autoRenew;
+            }
+
             if (empty($data)) {
                 throw new DomainsException(
-                    'Details must contain at least one of: autorenewEnabled, privacyEnabled, locked',
+                    'Details must include autoRenew',
                     400
                 );
             }
diff --git a/src/Domains/Registrar/Adapter/NameCom/UpdateDetails.php b/src/Domains/Registrar/Adapter/NameCom/UpdateDetails.php
deleted file mode 100644
index 5033922..0000000
--- a/src/Domains/Registrar/Adapter/NameCom/UpdateDetails.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-namespace Utopia\Domains\Registrar\Adapter\NameCom;
-
-use Utopia\Domains\Registrar\UpdateDetails as BaseUpdateDetails;
-
-class UpdateDetails extends BaseUpdateDetails
-{
-    /**
-     * @param bool|null $autorenewEnabled Enable or disable automatic renewal
-     * @param bool|null $privacyEnabled Enable or disable WHOIS privacy
-     * @param bool|null $locked Lock or unlock the domain
-     */
-    public function __construct(
-        public ?bool $autorenewEnabled = null,
-        public ?bool $privacyEnabled = null,
-        public ?bool $locked = null,
-    ) {
-    }
-
-    public function toArray(): array
-    {
-        $result = [];
-
-        if ($this->autorenewEnabled !== null) {
-            $result['autorenewEnabled'] = $this->autorenewEnabled;
-        }
-
-        if ($this->privacyEnabled !== null) {
-            $result['privacyEnabled'] = $this->privacyEnabled;
-        }
-
-        if ($this->locked !== null) {
-            $result['locked'] = $this->locked;
-        }
-
-        return $result;
-    }
-}
diff --git a/src/Domains/Registrar/Adapter/OpenSRS.php b/src/Domains/Registrar/Adapter/OpenSRS.php
index e5cdc72..1fcd6fd 100644
--- a/src/Domains/Registrar/Adapter/OpenSRS.php
+++ b/src/Domains/Registrar/Adapter/OpenSRS.php
@@ -16,7 +16,7 @@
 use Utopia\Domains\Registrar\TransferStatus;
 use Utopia\Domains\Registrar\Domain;
 use Utopia\Domains\Registrar\TransferStatusEnum;
-use Utopia\Domains\Registrar\UpdateDetails as UpdateDetails;
+use Utopia\Domains\Registrar\UpdateDetails;
 use Utopia\Domains\Registrar;
 
 class OpenSRS extends Adapter
@@ -578,23 +578,10 @@ public function getDomain(string $domain): Domain
     /**
      * Update the domain information
      *
-     * Example request 1:
+     * Example request:
      * <code>
-     * $details = new OpenSRSUpdateDetails(
-     *     data: 'contact_info',
-     *     contacts: [
-     *         'owner' => new Contact(...),
-     *         'admin' => new Contact(...),
-     *     ]
-     * );
-     * $reg->updateDomain('example.com', $details);
-     * </code>
-     *
-     * Example request 2:
-     * <code>
-     * $details = new OpenSRSUpdateDetails(
-     *     data: 'ca_whois_display_setting',
-     *     display: 'FULL'
+     * $details = new UpdateDetails(
+     *     autoRenew: true
      * );
      * $reg->updateDomain('example.com', $details);
      * </code>
@@ -605,11 +592,16 @@ public function getDomain(string $domain): Domain
      */
     public function updateDomain(string $domain, UpdateDetails $details): bool
     {
-        if (!$details instanceof OpenSRS\UpdateDetails) {
-            throw new Exception("Invalid details type: expected OpenSRS\\UpdateDetails");
+        if ($details->autoRenew === null) {
+            throw new DomainsException('Details must include autoRenew', 400);
         }
 
-        $attributes = $details->toArray();
+        $attributes = [
+            'data' => 'expire_action',
+            'affect_domains' => 0,
+            'auto_renew' => $details->autoRenew ? 1 : 0,
+            'let_expire' => $details->autoRenew ? 0 : 1,
+        ];
 
         $message = [
             'object' => 'DOMAIN',
@@ -618,14 +610,6 @@ public function updateDomain(string $domain, UpdateDetails $details): bool
             'attributes' => $attributes,
         ];
 
-        if ($details->contacts !== null) {
-            if ($details->data !== 'contact_info') {
-                throw new Exception("Invalid data: data must be 'contact_info' in order to update contacts");
-            }
-            $contacts = $this->sanitizeContacts($details->contacts);
-            $message['attributes']['contact_set'] = $contacts;
-        }
-
         $xpath = implode('/', [
             '//body',
             'data_block',
@@ -642,6 +626,13 @@ public function updateDomain(string $domain, UpdateDetails $details): bool
         $result = $this->send($message);
         $result = $this->sanitizeResponse($result);
         $elements = $result->xpath($xpath);
+        if (empty($elements)) {
+            $elements = $result->xpath('//body/data_block/dt_assoc/item[@key="is_success"]');
+        }
+
+        if (empty($elements)) {
+            throw new DomainsException('Failed to update domain: invalid response from OpenSRS', 500);
+        }
 
         return (string) $elements[0] === '1';
     }
diff --git a/src/Domains/Registrar/Adapter/OpenSRS/UpdateDetails.php b/src/Domains/Registrar/Adapter/OpenSRS/UpdateDetails.php
deleted file mode 100644
index 57a10e2..0000000
--- a/src/Domains/Registrar/Adapter/OpenSRS/UpdateDetails.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-namespace Utopia\Domains\Registrar\Adapter\OpenSRS;
-
-use Utopia\Domains\Registrar\UpdateDetails as BaseUpdateDetails;
-use Utopia\Domains\Registrar\Contact;
-
-class UpdateDetails extends BaseUpdateDetails
-{
-    /**
-     * @param string $data The data type to update (e.g., 'contact_info', 'ca_whois_display_setting')
-     * @param array<string,Contact>|null $contacts Associative array of contacts by type (owner, admin, tech, billing)
-     * @param string|null $display Display setting for CA domains (e.g., 'FULL', 'PRIVATE')
-     * @param array<string,mixed> $additionalData Additional data for specific update types
-     */
-    public function __construct(
-        public string $data,
-        public ?array $contacts = null,
-        public ?string $display = null,
-        public array $additionalData = [],
-    ) {
-    }
-
-    public function toArray(): array
-    {
-        $result = [
-            'data' => $this->data,
-        ];
-
-        if ($this->display !== null) {
-            $result['display'] = $this->display;
-        }
-
-        // Merge any additional data
-        if (!empty($this->additionalData)) {
-            $result = array_merge($result, $this->additionalData);
-        }
-
-        return $result;
-    }
-}
diff --git a/src/Domains/Registrar/UpdateDetails.php b/src/Domains/Registrar/UpdateDetails.php
index 5cabd32..eecdd07 100644
--- a/src/Domains/Registrar/UpdateDetails.php
+++ b/src/Domains/Registrar/UpdateDetails.php
@@ -2,12 +2,13 @@
 
 namespace Utopia\Domains\Registrar;
 
-abstract class UpdateDetails
+final class UpdateDetails
 {
     /**
-     * Convert details to array format
-     *
-     * @return array
+     * @param bool|null $autoRenew Enable or disable automatic renewal
      */
-    abstract public function toArray(): array;
+    public function __construct(
+        public ?bool $autoRenew = null,
+    ) {
+    }
 }
diff --git a/tests/Registrar/Base.php b/tests/Registrar/Base.php
index bfc1052..4fc066e 100644
--- a/tests/Registrar/Base.php
+++ b/tests/Registrar/Base.php
@@ -38,11 +38,10 @@ abstract protected function getExpectedAdapterName(): string;
     /**
      * Get an UpdateDetails instance for testing
      *
-     * @param array<string,mixed> $details Domain details to update
-     * @param array<string,Contact>|Contact|null $contacts Contacts to update
+     * @param bool|null $autoRenew Enable or disable automatic renewal
      * @return UpdateDetails
      */
-    abstract protected function getUpdateDetails(array $details = [], array|Contact|null $contacts = null): UpdateDetails;
+    abstract protected function getUpdateDetails(?bool $autoRenew = null): UpdateDetails;
 
     /**
      * Get purchase contact info
@@ -270,13 +269,7 @@ public function testUpdateDomain(): void
 
         $result = $this->getRegistrar()->updateDomain(
             $testDomain,
-            $this->getUpdateDetails(
-                [
-                    'autorenew' => true,
-                    'data' => 'contact_info',
-                ],
-                $this->getPurchaseContact('2')
-            )
+            $this->getUpdateDetails(true)
         );
 
         $this->assertTrue($result);
diff --git a/tests/Registrar/MockTest.php b/tests/Registrar/MockTest.php
index 5539eaa..342c508 100644
--- a/tests/Registrar/MockTest.php
+++ b/tests/Registrar/MockTest.php
@@ -10,7 +10,7 @@
 use Utopia\Domains\Registrar\Exception\DomainTakenException;
 use Utopia\Domains\Registrar\Exception\InvalidContactException;
 use Utopia\Domains\Registrar\Adapter\Mock;
-use Utopia\Domains\Registrar\Adapter\Mock\UpdateDetails;
+use Utopia\Domains\Registrar\UpdateDetails;
 
 class MockTest extends Base
 {
@@ -64,9 +64,9 @@ protected function getDefaultNameservers(): array
         ];
     }
 
-    protected function getUpdateDetails(array $details = [], array|Contact|null $contacts = null): UpdateDetails
+    protected function getUpdateDetails(?bool $autoRenew = null): UpdateDetails
     {
-        return new UpdateDetails($details, $contacts);
+        return new UpdateDetails($autoRenew);
     }
 
     // Mock-specific tests
@@ -132,35 +132,6 @@ public function testTransferWithInvalidContact(): void
         $this->registrar->transfer('transfer.com', 'auth-code', [$invalidContact]);
     }
 
-    public function testUpdateDomainWithInvalidContact(): void
-    {
-        $domain = 'testdomain.com';
-        $this->registrar->purchase($domain, $this->getPurchaseContact(), 1);
-
-        $this->expectException(InvalidContactException::class);
-        $this->expectExceptionMessage('missing required field');
-
-        $invalidContact = new Contact(
-            '',  // Empty firstname
-            'Doe',
-            '+1.5551234567',
-            'john.doe@example.com',
-            '123 Main St',
-            'Suite 100',
-            '',
-            'San Francisco',
-            'CA',
-            'US',
-            '94105',
-            'Test Inc'
-        );
-
-        $this->registrar->updateDomain(
-            $domain,
-            new UpdateDetails(['data' => 'contact_info'], [$invalidContact])
-        );
-    }
-
     public function testCheckTransferStatusWithRequestAddress(): void
     {
         $domain = 'example.com';
diff --git a/tests/Registrar/NameComTest.php b/tests/Registrar/NameComTest.php
index 79bca59..b38a33e 100644
--- a/tests/Registrar/NameComTest.php
+++ b/tests/Registrar/NameComTest.php
@@ -8,8 +8,7 @@
 use Utopia\Domains\Registrar;
 use Utopia\Domains\Registrar\Exception\AuthException;
 use Utopia\Domains\Registrar\Adapter\NameCom;
-use Utopia\Domains\Registrar\Adapter\NameCom\UpdateDetails;
-use Utopia\Domains\Registrar\Contact;
+use Utopia\Domains\Registrar\UpdateDetails;
 
 class NameComTest extends Base
 {
@@ -83,12 +82,9 @@ protected function getDefaultNameservers(): array
         ];
     }
 
-    protected function getUpdateDetails(array $details = [], array|Contact|null $contacts = null): UpdateDetails
+    protected function getUpdateDetails(?bool $autoRenew = null): UpdateDetails
     {
-        $autorenewEnabled = $details['autorenew'] ?? null;
-        $privacyEnabled = $details['privacy'] ?? null;
-        $locked = $details['locked'] ?? null;
-        return new UpdateDetails($autorenewEnabled, $privacyEnabled, $locked);
+        return new UpdateDetails($autoRenew);
     }
 
     protected function getPricingTestDomain(): string
diff --git a/tests/Registrar/OpenSRSTest.php b/tests/Registrar/OpenSRSTest.php
index d7417ed..480e9bd 100644
--- a/tests/Registrar/OpenSRSTest.php
+++ b/tests/Registrar/OpenSRSTest.php
@@ -9,8 +9,7 @@
 use Utopia\Domains\Registrar\Exception\AuthException;
 use Utopia\Domains\Registrar\Exception\DomainNotTransferableException;
 use Utopia\Domains\Registrar\Adapter\OpenSRS;
-use Utopia\Domains\Registrar\Adapter\OpenSRS\UpdateDetails;
-use Utopia\Domains\Registrar\Contact;
+use Utopia\Domains\Registrar\UpdateDetails;
 
 class OpenSRSTest extends Base
 {
@@ -86,10 +85,9 @@ protected function getDefaultNameservers(): array
         ];
     }
 
-    protected function getUpdateDetails(array $details = [], array|Contact|null $contacts = null): UpdateDetails
+    protected function getUpdateDetails(?bool $autoRenew = null): UpdateDetails
     {
-        $data = $details['data'] ?? 'contact_info';
-        return new UpdateDetails($data, $contacts);
+        return new UpdateDetails($autoRenew);
     }
 
     // OpenSRS-specific tests