diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 64e49715db..d935ade836 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -63,12 +63,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '4.0.0-BETA3';
+    const VERSION = '4.0.0-DEV';
     const VERSION_ID = 40000;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 0;
     const RELEASE_VERSION = 0;
-    const EXTRA_VERSION = 'BETA3';
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '07/2018';
     const END_OF_LIFE = '01/2019';