diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 944c69ca88..8d7e279665 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -68,12 +68,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
 
     private static $freshCache = [];
 
-    const VERSION = '5.0.3';
-    const VERSION_ID = 50003;
+    const VERSION = '5.0.4-DEV';
+    const VERSION_ID = 50004;
     const MAJOR_VERSION = 5;
     const MINOR_VERSION = 0;
-    const RELEASE_VERSION = 3;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 4;
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '07/2020';
     const END_OF_LIFE = '07/2020';