diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index de2af3cab29..10aba23b8f5 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,5 +1,8 @@
 // $Id$
 
+Drupal 5.24-dev, xxxx-xx-xx
+-----------------------
+
 Drupal 5.23, 2010-08-11
 -----------------------
 - Fixed security issues (File download access bypass, Comment unpublishing
diff --git a/modules/system/system.module b/modules/system/system.module
index 70ccbc890aa..114992bb9d8 100644
--- a/modules/system/system.module
+++ b/modules/system/system.module
@@ -6,7 +6,7 @@
  * Configuration system that lets administrators modify the workings of the site.
  */
 
-define('VERSION', '5.23');
+define('VERSION', '5.24-dev');
 
 /**
  * Implementation of hook_help().