diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 6d86705c87..a4d715cad3 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 $startTime;
     protected $loadClassCache;
 
-    const VERSION = '2.7.19';
-    const VERSION_ID = 20719;
+    const VERSION = '2.7.20-DEV';
+    const VERSION_ID = 20720;
     const MAJOR_VERSION = 2;
     const MINOR_VERSION = 7;
-    const RELEASE_VERSION = 19;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 20;
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '05/2018';
     const END_OF_LIFE = '05/2019';