diff --git a/lib/Doctrine/ORM/Version.php b/lib/Doctrine/ORM/Version.php
index d6d32a10b..5e811edd0 100644
--- a/lib/Doctrine/ORM/Version.php
+++ b/lib/Doctrine/ORM/Version.php
@@ -36,7 +36,7 @@ class Version
     /**
      * Current Doctrine Version
      */
-    const VERSION = '2.1.0RC3';
+    const VERSION = '2.1.0RC4-DEV';
 
     /**
      * Compares a Doctrine version with the current one.