diff --git a/symfony/framework-bundle/3.3/src/Kernel.php b/symfony/framework-bundle/3.3/src/Kernel.php
index 3ae58f0f..b60bed29 100644
--- a/symfony/framework-bundle/3.3/src/Kernel.php
+++ b/symfony/framework-bundle/3.3/src/Kernel.php
@@ -11,7 +11,7 @@ use Symfony\Component\Routing\RouteCollectionBuilder;
 /**
  * @author Fabien Potencier <fabien@symfony.com>
  */
-final class Kernel extends BaseKernel
+class Kernel extends BaseKernel
 {
     use MicroKernelTrait;