diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 40979949..43f86d17 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -2321,3 +2321,12 @@ parameters:
 			identifier: return.type
 			count: 1
 			path: src/webauthn/src/SimpleFakeCredentialGenerator.php
+
+		-
+			rawMessage: '''
+				Fetching deprecated class constant AUTHENTICATOR_TRANSPORT_CABLE of class Webauthn\PublicKeyCredentialDescriptor:
+				Please use AUTHENTICATOR_TRANSPORT_BLE instead. Will be removed in 6.0.0
+			'''
+			identifier: classConstant.deprecated
+			count: 1
+			path: src/webauthn/src/PublicKeyCredentialDescriptor.php
diff --git a/src/webauthn/src/AuthenticatorSelectionCriteria.php b/src/webauthn/src/AuthenticatorSelectionCriteria.php
index 8ef98cde..160cbdd3 100644
--- a/src/webauthn/src/AuthenticatorSelectionCriteria.php
+++ b/src/webauthn/src/AuthenticatorSelectionCriteria.php
@@ -48,6 +48,15 @@ class AuthenticatorSelectionCriteria
         self::RESIDENT_KEY_REQUIREMENT_DISCOURAGED,
     ];
 
+    /**
+     * Legacy property for backward compatibility.
+     *
+     * requireResidentKey is based on residentKey for backward compatibility
+     * Per WebAuthn Level 3 spec: "Relying Parties SHOULD set it to true if, and only if, residentKey is set to required."
+     * Only set when residentKey is "required"; leave uninitialized otherwise
+     */
+    public readonly ?bool $requireResidentKey;
+
     public function __construct(
         public null|string $authenticatorAttachment = null,
         public string $userVerification = self::USER_VERIFICATION_REQUIREMENT_PREFERRED,
@@ -62,6 +71,12 @@ public function __construct(
         in_array($residentKey, self::RESIDENT_KEY_REQUIREMENTS, true) || throw new InvalidArgumentException(
             'Invalid resident key'
         );
+
+        if ($residentKey === self::RESIDENT_KEY_REQUIREMENT_REQUIRED) {
+            $this->requireResidentKey = true;
+        } else {
+            $this->requireResidentKey = null;
+        }
     }
 
     public static function create(
diff --git a/src/webauthn/src/PublicKeyCredentialDescriptor.php b/src/webauthn/src/PublicKeyCredentialDescriptor.php
index 09fd620d..2f7cfc27 100644
--- a/src/webauthn/src/PublicKeyCredentialDescriptor.php
+++ b/src/webauthn/src/PublicKeyCredentialDescriptor.php
@@ -14,8 +14,15 @@ class PublicKeyCredentialDescriptor
 
     final public const AUTHENTICATOR_TRANSPORT_BLE = 'ble';
 
+    /**
+     * @deprecated Please use AUTHENTICATOR_TRANSPORT_BLE instead. Will be removed in 6.0.0
+     */
     final public const AUTHENTICATOR_TRANSPORT_CABLE = 'cable';
 
+    final public const AUTHENTICATOR_TRANSPORT_SMART_CARD = 'smart-card';
+
+    final public const AUTHENTICATOR_TRANSPORT_HYBRID = 'hybrid';
+
     final public const AUTHENTICATOR_TRANSPORT_INTERNAL = 'internal';
 
     final public const AUTHENTICATOR_TRANSPORTS = [
@@ -23,6 +30,8 @@ class PublicKeyCredentialDescriptor
         self::AUTHENTICATOR_TRANSPORT_NFC,
         self::AUTHENTICATOR_TRANSPORT_BLE,
         self::AUTHENTICATOR_TRANSPORT_CABLE,
+        self::AUTHENTICATOR_TRANSPORT_SMART_CARD,
+        self::AUTHENTICATOR_TRANSPORT_HYBRID,
         self::AUTHENTICATOR_TRANSPORT_INTERNAL,
     ];
 
diff --git a/tests/library/Unit/AuthenticatorSelectionCriteriaTest.php b/tests/library/Unit/AuthenticatorSelectionCriteriaTest.php
index 7292bb26..3462b81c 100644
--- a/tests/library/Unit/AuthenticatorSelectionCriteriaTest.php
+++ b/tests/library/Unit/AuthenticatorSelectionCriteriaTest.php
@@ -57,7 +57,7 @@ public function anAuthenticatorSelectionCriteriaCanBeCreatedAndValueAccessed():
     public function anAuthenticatorSelectionCriteriaWithResidentKeyCanBeCreatedAndValueAccessed(): void
     {
         // Given
-        $expectedJson = '{"userVerification":"required","residentKey":"required","authenticatorAttachment":"platform"}';
+        $expectedJson = '{"requireResidentKey":true,"userVerification":"required","residentKey":"required","authenticatorAttachment":"platform"}';
         $authenticatorSelectionCriteria = AuthenticatorSelectionCriteria::create(
             AuthenticatorSelectionCriteria::AUTHENTICATOR_ATTACHMENT_PLATFORM,
             AuthenticatorSelectionCriteria::USER_VERIFICATION_REQUIREMENT_REQUIRED,
@@ -80,6 +80,7 @@ public function anAuthenticatorSelectionCriteriaWithResidentKeyCanBeCreatedAndVa
             $data->authenticatorAttachment
         );
         static::assertSame(AuthenticatorSelectionCriteria::RESIDENT_KEY_REQUIREMENT_REQUIRED, $data->residentKey);
+        static::assertTrue($data->requireResidentKey);
         static::assertJsonStringEqualsJsonString($expectedJson, $this->getSerializer()->serialize($data, 'json', [
             AbstractObjectNormalizer::SKIP_NULL_VALUES => true,
         ]));
diff --git a/tests/symfony/config/config.yml b/tests/symfony/config/config.yml
index 48b8f252..d6115f5a 100644
--- a/tests/symfony/config/config.yml
+++ b/tests/symfony/config/config.yml
@@ -37,6 +37,7 @@ services:
 
   Symfony\Component\Serializer\Normalizer\ObjectNormalizer:
     tags: [ serializer.normalizer ]
+    autowire: true
 
   Webauthn\Tests\Bundle\Functional\MockClientCallback: ~
 
diff --git a/tests/symfony/functional/Firewall/RegistrationAreaTest.php b/tests/symfony/functional/Firewall/RegistrationAreaTest.php
index 0196d26a..cd839eea 100644
--- a/tests/symfony/functional/Firewall/RegistrationAreaTest.php
+++ b/tests/symfony/functional/Firewall/RegistrationAreaTest.php
@@ -101,6 +101,7 @@ public function aValidRequestProcessed(): void
 
         static::assertArrayHasKey('authenticatorSelection', $data);
         static::assertSame([
+            'requireResidentKey' => true,
             'authenticatorAttachment' => 'cross-platform',
             'userVerification' => 'required',
             'residentKey' => 'required',
@@ -137,6 +138,7 @@ public function aValidRequestProcessedOnOtherHost(): void
 
         static::assertArrayHasKey('authenticatorSelection', $data);
         static::assertSame([
+            'requireResidentKey' => true,
             'userVerification' => 'preferred',
             'residentKey' => 'required',
         ], $data['authenticatorSelection']);
@@ -181,6 +183,7 @@ public function aValidRequestProcessedWithExtensions(): void
 
         static::assertArrayHasKey('authenticatorSelection', $data);
         static::assertSame([
+            'requireResidentKey' => true,
             'authenticatorAttachment' => 'platform',
             'userVerification' => 'required',
             'residentKey' => 'required',