diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc
index c32c05d5fac..677b216eedb 100644
--- a/includes/bootstrap.inc
+++ b/includes/bootstrap.inc
@@ -8,7 +8,7 @@
 /**
  * The current system version.
  */
-define('VERSION', '7.12');
+define('VERSION', '7.13-dev');
 
 /**
  * Core API compatibility.