diff --git a/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php b/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php
index f5fcbeada6..58c3cfde4b 100644
--- a/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php
@@ -4,12 +4,12 @@ namespace Symfony\Bridge\Twig\Tests;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\Twig\AppVariable;
+use Symfony\Bridge\Twig\Tests\Fixtures\TokenInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Session\Flash\FlashBag;
 use Symfony\Component\HttpFoundation\Session\Session;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
 class AppVariableTest extends TestCase
diff --git a/src/Symfony/Bridge/Twig/Tests/Fixtures/TokenInterface.php b/src/Symfony/Bridge/Twig/Tests/Fixtures/TokenInterface.php
new file mode 100644
index 0000000000..b22e99e66d
--- /dev/null
+++ b/src/Symfony/Bridge/Twig/Tests/Fixtures/TokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Bridge\Twig\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TokenInterface.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TokenInterface.php
new file mode 100644
index 0000000000..4de75ac5b3
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php
index cb50a6cbae..2e8162baf0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php
@@ -12,10 +12,10 @@
 namespace Symfony\Bundle\FrameworkBundle\Tests\Templating;
 
 use Symfony\Bundle\FrameworkBundle\Templating\GlobalVariables;
+use Symfony\Bundle\FrameworkBundle\Tests\Fixtures\TokenInterface;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
 /**
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Fixtures/TokenInterface.php b/src/Symfony/Bundle/SecurityBundle/Tests/Fixtures/TokenInterface.php
new file mode 100644
index 0000000000..1102a4f3b0
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Fixtures/TokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Bundle\SecurityBundle\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/EventAliasTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/EventAliasTest.php
index b30d461778..d1f8860e4b 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/EventAliasTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/EventAliasTest.php
@@ -11,8 +11,8 @@
 
 namespace Symfony\Bundle\SecurityBundle\Tests\Functional;
 
+use Symfony\Bundle\SecurityBundle\Tests\Fixtures\TokenInterface;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\AuthenticationEvents;
 use Symfony\Component\Security\Core\Event\AuthenticationFailureEvent;
 use Symfony\Component\Security\Core\Event\AuthenticationSuccessEvent;
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
index 8bfda6c2f6..c00b5d9e25 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
@@ -13,12 +13,12 @@ namespace Symfony\Bundle\SecurityBundle\Tests;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Bundle\SecurityBundle\SecurityUserValueResolver;
+use Symfony\Bundle\SecurityBundle\Tests\Fixtures\TokenInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver;
 use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
 /**
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php
index db1e388703..6a997c462b 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php
@@ -15,7 +15,6 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\Security\Core\Authentication\AuthenticationProviderManager;
 use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
 use Symfony\Component\Security\Core\AuthenticationEvents;
 use Symfony\Component\Security\Core\Event\AuthenticationFailureEvent;
@@ -23,6 +22,7 @@ use Symfony\Component\Security\Core\Event\AuthenticationSuccessEvent;
 use Symfony\Component\Security\Core\Exception\AccountStatusException;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\ProviderNotFoundException;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class AuthenticationProviderManagerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php
index 3d6258e2da..2bae381e4b 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php
@@ -15,7 +15,7 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolver;
 use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class AuthenticationTrustResolverTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php
index 5aa23d981c..269927e32d 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php
@@ -14,9 +14,9 @@ namespace Symfony\Component\Security\Core\Tests\Authentication\Provider;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Provider\AnonymousAuthenticationProvider;
 use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class AnonymousAuthenticationProviderTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php
index 6527bae618..61821d8ddb 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php
@@ -13,10 +13,10 @@ namespace Symfony\Component\Security\Core\Tests\Authentication\Provider;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Provider\PreAuthenticatedAuthenticationProvider;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 use Symfony\Component\Security\Core\Exception\LockedException;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Core\User\UserCheckerInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php
index 96d62692d1..4bd84be928 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php
@@ -14,11 +14,11 @@ namespace Symfony\Component\Security\Core\Tests\Authentication\Provider;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Provider\RememberMeAuthenticationProvider;
 use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 use Symfony\Component\Security\Core\Exception\DisabledException;
 use Symfony\Component\Security\Core\Exception\LogicException;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Core\User\User;
 use Symfony\Component\Security\Core\User\UserCheckerInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php
index 053f2e5451..005d2896e4 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php
@@ -14,9 +14,9 @@ namespace Symfony\Component\Security\Core\Tests\Authentication\Provider;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Provider\SimpleAuthenticationProvider;
 use Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\DisabledException;
 use Symfony\Component\Security\Core\Exception\LockedException;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Core\User\UserChecker;
 use Symfony\Component\Security\Core\User\UserCheckerInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php
index 1a929dae99..290de34672 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php
@@ -14,7 +14,6 @@ namespace Symfony\Component\Security\Core\Tests\Authentication\Provider;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider;
 use Symfony\Component\Security\Core\Authentication\Token\SwitchUserToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
 use Symfony\Component\Security\Core\Exception\AccountExpiredException;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
@@ -23,6 +22,7 @@ use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 use Symfony\Component\Security\Core\Exception\CredentialsExpiredException;
 use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
 use Symfony\Component\Security\Core\Role\SwitchUserRole;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Core\User\UserCheckerInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/Storage/UsageTrackingTokenStorageTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/Storage/UsageTrackingTokenStorageTest.php
index 607ccc7504..a6372682d4 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/Storage/UsageTrackingTokenStorageTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/Storage/UsageTrackingTokenStorageTest.php
@@ -16,7 +16,7 @@ use Psr\Container\ContainerInterface;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Contracts\Service\ServiceLocatorTrait;
 
 class UsageTrackingTokenStorageTest extends TestCase
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
index 5e718564d9..2fb44d0f0c 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
@@ -12,9 +12,9 @@
 namespace Symfony\Component\Security\Core\Tests\Authorization;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\AccessDecisionManager;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class AccessDecisionManagerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
index d4f89396d3..60b770f50a 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
@@ -12,11 +12,11 @@
 namespace Symfony\Component\Security\Core\Tests\Authorization;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\AccessDecisionManager;
 use Symfony\Component\Security\Core\Authorization\DebugAccessDecisionManager;
 use Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class TraceableAccessDecisionManagerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php
index 122caed8db..cebee68474 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php
@@ -15,9 +15,9 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolver;
 use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class AuthenticatedVoterTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php
index 820a002f11..b36272cc22 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php
@@ -15,12 +15,12 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\ExpressionLanguage\Expression;
 use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolverInterface;
 use Symfony\Component\Security\Core\Authentication\Token\AbstractToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
 use Symfony\Component\Security\Core\Authorization\ExpressionLanguage;
 use Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
 use Symfony\Component\Security\Core\Role\Role;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class ExpressionVoterTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
index d7d0f1f2db..e7b88fcb7e 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
@@ -13,10 +13,10 @@ namespace Symfony\Component\Security\Core\Tests\Authorization\Voter;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Token\AbstractToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\Voter\RoleVoter;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
 use Symfony\Component\Security\Core\Role\Role;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 class RoleVoterTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php
index 53e6a27745..d4fe49f243 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php
@@ -12,10 +12,10 @@
 namespace Symfony\Component\Security\Core\Tests\Authorization\Voter;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\Voter\TraceableVoter;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
 use Symfony\Component\Security\Core\Event\VoteEvent;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 class TraceableVoterTest extends TestCase
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php
index bf660073fe..d3ad020bea 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php
@@ -15,6 +15,7 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\Voter\Voter;
 use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface as StrictTokenInterface;
 
 class VoterTest extends TestCase
 {
@@ -22,7 +23,7 @@ class VoterTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->token = $this->createMock(TokenInterface::class);
+        $this->token = $this->createMock(StrictTokenInterface::class);
     }
 
     public function getTests()
diff --git a/src/Symfony/Component/Security/Core/Tests/Fixtures/TokenInterface.php b/src/Symfony/Component/Security/Core/Tests/Fixtures/TokenInterface.php
new file mode 100644
index 0000000000..32a83deeb6
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/Tests/Fixtures/TokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\Security\Core\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Component/Security/Core/Tests/Role/SwitchUserRoleTest.php b/src/Symfony/Component/Security/Core/Tests/Role/SwitchUserRoleTest.php
index f84afdf098..47daee4a94 100644
--- a/src/Symfony/Component/Security/Core/Tests/Role/SwitchUserRoleTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Role/SwitchUserRoleTest.php
@@ -12,8 +12,8 @@
 namespace Symfony\Component\Security\Core\Tests\Role;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Role\SwitchUserRole;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 
 /**
  * @group legacy
diff --git a/src/Symfony/Component/Security/Core/Tests/SecurityTest.php b/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
index efc480f82f..5265eb7aea 100644
--- a/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
@@ -14,10 +14,10 @@ namespace Symfony\Component\Security\Core\Tests;
 use PHPUnit\Framework\TestCase;
 use Psr\Container\ContainerInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
 use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
 use Symfony\Component\Security\Core\Security;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Core\User\User;
 
 class SecurityTest extends TestCase
diff --git a/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php b/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
index 5fc9ba0eae..ecead3d111 100644
--- a/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
@@ -13,9 +13,9 @@ namespace Symfony\Component\Security\Core\Tests\Validator\Constraints;
 
 use Foo\Bar\User;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Encoder\EncoderFactoryInterface;
 use Symfony\Component\Security\Core\Encoder\PasswordEncoderInterface;
+use Symfony\Component\Security\Core\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\Validator\Constraints\UserPassword;
 use Symfony\Component\Security\Core\Validator\Constraints\UserPasswordValidator;
diff --git a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
index 512bf313f7..b4dc224544 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
@@ -17,7 +17,6 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Event\RequestEvent;
 use Symfony\Component\Security\Core\Authentication\AuthenticationProviderManager;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 use Symfony\Component\Security\Core\Exception\LockedException;
@@ -25,6 +24,7 @@ use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
 use Symfony\Component\Security\Guard\AuthenticatorInterface;
 use Symfony\Component\Security\Guard\Firewall\GuardAuthenticationListener;
 use Symfony\Component\Security\Guard\GuardAuthenticatorHandler;
+use Symfony\Component\Security\Guard\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Guard\Token\PreAuthenticationGuardToken;
 use Symfony\Component\Security\Http\RememberMe\RememberMeServicesInterface;
 
diff --git a/src/Symfony/Component/Security/Guard/Tests/Fixtures/GuardTokenInterface.php b/src/Symfony/Component/Security/Guard/Tests/Fixtures/GuardTokenInterface.php
new file mode 100644
index 0000000000..1dfa7eed48
--- /dev/null
+++ b/src/Symfony/Component/Security/Guard/Tests/Fixtures/GuardTokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\Security\Guard\Tests\Fixtures;
+
+use Symfony\Component\Security\Guard\Token\GuardTokenInterface as BaseGuardTokenInterface;
+
+interface GuardTokenInterface extends BaseGuardTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Component/Security/Guard/Tests/Fixtures/TokenInterface.php b/src/Symfony/Component/Security/Guard/Tests/Fixtures/TokenInterface.php
new file mode 100644
index 0000000000..ab2b10c17c
--- /dev/null
+++ b/src/Symfony/Component/Security/Guard/Tests/Fixtures/TokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\Security\Guard\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php b/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php
index f35daf6de2..b40e19143f 100644
--- a/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php
@@ -16,10 +16,10 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Guard\AuthenticatorInterface;
 use Symfony\Component\Security\Guard\GuardAuthenticatorHandler;
+use Symfony\Component\Security\Guard\Tests\Fixtures\TokenInterface;
 use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
 use Symfony\Component\Security\Http\SecurityEvents;
 use Symfony\Component\Security\Http\Session\SessionAuthenticationStrategyInterface;
diff --git a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
index ef21ebbb47..e3e3da7704 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
@@ -20,7 +20,7 @@ use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 use Symfony\Component\Security\Guard\AuthenticatorInterface;
 use Symfony\Component\Security\Guard\Provider\GuardAuthenticationProvider;
-use Symfony\Component\Security\Guard\Token\GuardTokenInterface;
+use Symfony\Component\Security\Guard\Tests\Fixtures\GuardTokenInterface;
 use Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken;
 use Symfony\Component\Security\Guard\Token\PreAuthenticationGuardToken;
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php
index 9ed1822bf2..f168e415c0 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php
@@ -15,9 +15,9 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
 use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Http\Authentication\DefaultAuthenticationSuccessHandler;
 use Symfony\Component\Security\Http\HttpUtils;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class DefaultAuthenticationSuccessHandlerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Authentication/SimpleAuthenticationHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Authentication/SimpleAuthenticationHandlerTest.php
index 5907654d15..24b5c86810 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authentication/SimpleAuthenticationHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authentication/SimpleAuthenticationHandlerTest.php
@@ -15,11 +15,11 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Http\Authentication\AuthenticationFailureHandlerInterface;
 use Symfony\Component\Security\Http\Authentication\AuthenticationSuccessHandlerInterface;
 use Symfony\Component\Security\Http\Authentication\SimpleAuthenticationHandler;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 /**
  * @group legacy
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php
index 83909a73ad..e841273f78 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php
@@ -17,10 +17,10 @@ use Symfony\Component\HttpKernel\Event\RequestEvent;
 use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
 use Symfony\Component\Security\Core\Authentication\Token\PreAuthenticatedToken;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class AbstractPreAuthenticatedListenerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php
index c57cf96290..4840cf4f5f 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php
@@ -18,13 +18,13 @@ use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\AccessDecisionManagerInterface;
 use Symfony\Component\Security\Core\Exception\AccessDeniedException;
 use Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException;
 use Symfony\Component\Security\Http\AccessMapInterface;
 use Symfony\Component\Security\Http\Event\LazyResponseEvent;
 use Symfony\Component\Security\Http\Firewall\AccessListener;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class AccessListenerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php
index 522e0abc1c..45530c1234 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php
@@ -19,8 +19,8 @@ use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
 use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Http\Firewall\AnonymousAuthenticationListener;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class AnonymousAuthenticationListenerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php
index f1e6c8bca7..2993b4956f 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php
@@ -20,11 +20,11 @@ use Symfony\Component\Security\Core\Authentication\AuthenticationProviderManager
 use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
 use Symfony\Component\Security\Core\Authentication\Token\PreAuthenticatedToken;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface;
 use Symfony\Component\Security\Http\Firewall\BasicAuthenticationListener;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class BasicAuthenticationListenerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
index b6c437a033..46c48b6637 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
@@ -19,7 +19,6 @@ use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolverInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AccessDeniedException;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\LogoutException;
@@ -27,6 +26,7 @@ use Symfony\Component\Security\Http\Authorization\AccessDeniedHandlerInterface;
 use Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface;
 use Symfony\Component\Security\Http\Firewall\ExceptionListener;
 use Symfony\Component\Security\Http\HttpUtils;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class ExceptionListenerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php
index 7f3c8f90bb..f5c6107051 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php
@@ -16,13 +16,13 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Event\RequestEvent;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\LogoutException;
 use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
 use Symfony\Component\Security\Http\Firewall\LogoutListener;
 use Symfony\Component\Security\Http\HttpUtils;
 use Symfony\Component\Security\Http\Logout\LogoutHandlerInterface;
 use Symfony\Component\Security\Http\Logout\LogoutSuccessHandlerInterface;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class LogoutListenerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
index 88648c301a..ac6186b55a 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
@@ -20,13 +20,13 @@ use Symfony\Component\HttpKernel\Event\ResponseEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
 use Symfony\Component\Security\Http\Firewall\RememberMeListener;
 use Symfony\Component\Security\Http\RememberMe\RememberMeServicesInterface;
 use Symfony\Component\Security\Http\SecurityEvents;
 use Symfony\Component\Security\Http\Session\SessionAuthenticationStrategyInterface;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 class RememberMeListenerTest extends TestCase
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php
index 23ee13a816..868d811030 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php
@@ -18,12 +18,12 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Event\RequestEvent;
 use Symfony\Component\Security\Core\Authentication\AuthenticationProviderManager;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Http\Authentication\SimplePreAuthenticatorInterface;
 use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
 use Symfony\Component\Security\Http\Firewall\SimplePreAuthenticationListener;
 use Symfony\Component\Security\Http\SecurityEvents;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 /**
  * @group legacy
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php
index 14befc7322..5b7ada7485 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php
@@ -28,6 +28,7 @@ use Symfony\Component\Security\Http\Authentication\AuthenticationSuccessHandlerI
 use Symfony\Component\Security\Http\Firewall\UsernamePasswordJsonAuthenticationListener;
 use Symfony\Component\Security\Http\HttpUtils;
 use Symfony\Component\Security\Http\Session\SessionAuthenticationStrategyInterface;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface as StrictTokenInterface;
 
 /**
  * @author Kévin Dunglas <dunglas@gmail.com>
@@ -50,7 +51,7 @@ class UsernamePasswordJsonAuthenticationListenerTest extends TestCase
         ;
         $authenticationManager = $this->createMock(AuthenticationManagerInterface::class);
 
-        $authenticatedToken = $this->createMock(TokenInterface::class);
+        $authenticatedToken = $this->createMock(StrictTokenInterface::class);
 
         if ($success) {
             $authenticationManager->method('authenticate')->willReturn($authenticatedToken);
diff --git a/src/Symfony/Component/Security/Http/Tests/Fixtures/TokenInterface.php b/src/Symfony/Component/Security/Http/Tests/Fixtures/TokenInterface.php
new file mode 100644
index 0000000000..254381cb23
--- /dev/null
+++ b/src/Symfony/Component/Security/Http/Tests/Fixtures/TokenInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\Security\Http\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}
diff --git a/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php
index 88b8288008..bfffbe368c 100644
--- a/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php
@@ -16,8 +16,8 @@ use Symfony\Component\HttpFoundation\Cookie;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\ResponseHeaderBag;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Http\Logout\CookieClearingLogoutHandler;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class CookieClearingLogoutHandlerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Logout/CsrfTokenClearingLogoutHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Logout/CsrfTokenClearingLogoutHandlerTest.php
index 13f2f33507..d67da672da 100644
--- a/src/Symfony/Component/Security/Http/Tests/Logout/CsrfTokenClearingLogoutHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Logout/CsrfTokenClearingLogoutHandlerTest.php
@@ -16,9 +16,9 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\Session\Session;
 use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Csrf\TokenStorage\SessionTokenStorage;
 use Symfony\Component\Security\Http\Logout\CsrfTokenClearingLogoutHandler;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class CsrfTokenClearingLogoutHandlerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Logout/SessionLogoutHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Logout/SessionLogoutHandlerTest.php
index 60551abdd7..f53e9f691f 100644
--- a/src/Symfony/Component/Security/Http/Tests/Logout/SessionLogoutHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Logout/SessionLogoutHandlerTest.php
@@ -15,8 +15,8 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\Session\Session;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Http\Logout\SessionLogoutHandler;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class SessionLogoutHandlerTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php
index 39bce812bf..f517902125 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php
@@ -15,11 +15,11 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Cookie;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 use Symfony\Component\Security\Http\RememberMe\AbstractRememberMeServices;
 use Symfony\Component\Security\Http\RememberMe\RememberMeServicesInterface;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class AbstractRememberMeServicesTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
index c7bb04341e..a3249e940e 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
@@ -19,7 +19,6 @@ use Symfony\Component\HttpFoundation\ResponseHeaderBag;
 use Symfony\Component\Security\Core\Authentication\RememberMe\PersistentToken;
 use Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface;
 use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\CookieTheftException;
 use Symfony\Component\Security\Core\Exception\TokenNotFoundException;
 use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
@@ -27,6 +26,7 @@ use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 use Symfony\Component\Security\Http\RememberMe\PersistentTokenBasedRememberMeServices;
 use Symfony\Component\Security\Http\RememberMe\RememberMeServicesInterface;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class PersistentTokenBasedRememberMeServicesTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
index 55cfb678f3..5ac9f300eb 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
@@ -17,12 +17,12 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\ResponseHeaderBag;
 use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 use Symfony\Component\Security\Http\RememberMe\RememberMeServicesInterface;
 use Symfony\Component\Security\Http\RememberMe\TokenBasedRememberMeServices;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class TokenBasedRememberMeServicesTest extends TestCase
 {
diff --git a/src/Symfony/Component/Security/Http/Tests/Session/SessionAuthenticationStrategyTest.php b/src/Symfony/Component/Security/Http/Tests/Session/SessionAuthenticationStrategyTest.php
index 69953ae6fd..010bb0edf2 100644
--- a/src/Symfony/Component/Security/Http/Tests/Session/SessionAuthenticationStrategyTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Session/SessionAuthenticationStrategyTest.php
@@ -14,8 +14,8 @@ namespace Symfony\Component\Security\Http\Tests\Session;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Http\Session\SessionAuthenticationStrategy;
+use Symfony\Component\Security\Http\Tests\Fixtures\TokenInterface;
 
 class SessionAuthenticationStrategyTest extends TestCase
 {