diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index ee434ab2e3..d2ca2bf65f 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -58,12 +58,12 @@ abstract class Kernel implements KernelInterface, TerminableInterface
     protected $classes;
     protected $errorReportingLevel;
 
-    const VERSION         = '2.1.8';
-    const VERSION_ID      = '20108';
+    const VERSION         = '2.1.9-DEV';
+    const VERSION_ID      = '20109';
     const MAJOR_VERSION   = '2';
     const MINOR_VERSION   = '1';
-    const RELEASE_VERSION = '8';
-    const EXTRA_VERSION   = '';
+    const RELEASE_VERSION = '9';
+    const EXTRA_VERSION   = 'DEV';
 
     /**
      * Constructor.