diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index d18c2e75cb71..5932aeef2c0c 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -61,7 +61,7 @@ abstract class Kernel implements KernelInterface
     const MAJOR_VERSION   = '2';
     const MINOR_VERSION   = '0';
     const RELEASE_VERSION = '21';
-    const EXTRA_VERSION   = 'DEV';
+    const EXTRA_VERSION   = '';
 
     /**
      * Constructor.