diff --git a/core/constant_inc.php b/core/constant_inc.php
index 50b021b30b..849acb6eb6 100644
--- a/core/constant_inc.php
+++ b/core/constant_inc.php
@@ -21,7 +21,7 @@
 /**
  * Mantis Version
  */
-define( 'MANTIS_VERSION', '2.23.0' );
+define( 'MANTIS_VERSION', '2.24.0-dev' );
 define( 'FILTER_VERSION', 'v9' );
 
 # --- constants -------------------