diff --git a/src/Controller/Logout.php b/src/Controller/Logout.php
index f3a76e4..c0cee68 100644
--- a/src/Controller/Logout.php
+++ b/src/Controller/Logout.php
@@ -14,7 +14,6 @@
 use EcPhp\CasLib\Contract\CasInterface;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
-use Symfony\Bundle\SecurityBundle\Security;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
 use Throwable;
@@ -24,7 +23,6 @@ final class Logout
     public function __invoke(
         ServerRequestInterface $request,
         CasInterface $cas,
-        Security $security,
         TokenStorageInterface $tokenStorage
     ): RedirectResponse|ResponseInterface {
         try {
@@ -36,7 +34,6 @@ public function __invoke(
             return new RedirectResponse('/');
         }
 
-        $security->getToken()?->eraseCredentials();
         $tokenStorage->setToken(null);
 
         return $response;
diff --git a/src/Security/Core/User/CasUser.php b/src/Security/Core/User/CasUser.php
index e0fdfe4..f82e8c9 100644
--- a/src/Security/Core/User/CasUser.php
+++ b/src/Security/Core/User/CasUser.php
@@ -25,8 +25,6 @@ public function __toString(): string
         return (string) $this->get('user');
     }
 
-    public function eraseCredentials(): void {}
-
     public function get(string $key, mixed $default = null): mixed
     {
         return $this->payload[$key] ?? $default;