diff --git a/core/modules/system/src/Controller/CsrfTokenController.php b/core/modules/system/src/Controller/CsrfTokenController.php
index 7ba6d85..e0f487f 100644
--- a/core/modules/system/src/Controller/CsrfTokenController.php
+++ b/core/modules/system/src/Controller/CsrfTokenController.php
@@ -3,14 +3,14 @@
 namespace Drupal\system\Controller;
 
 use Drupal\Core\Access\CsrfTokenGenerator;
-use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\Response;
 
 /**
  * Returns responses for CSRF token routes.
  */
-class CsrfTokenController extends ControllerBase {
+class CsrfTokenController implements ContainerInjectionInterface {
 
   /**
    * The CSRF token generator.