diff --git a/common/constants.php b/common/constants.php
index 4345368a0..800b3ff22 100644
--- a/common/constants.php
+++ b/common/constants.php
@@ -3,7 +3,7 @@
 /**
  * RX_VERSION is the version number of the Rhymix CMS.
  */
-define('RX_VERSION', '2.1.20');
+define('RX_VERSION', '2.1.21');
 
 /**
  * RX_MICROTIME is the startup time of the current script, in microseconds since the Unix epoch.