diff --git a/lib/bootstrap.php b/lib/bootstrap.php
index fcc1f4816965b118360f7f0bed3e1107df0ede19..d1d84b111418558458eb6fc7a18df53bf4c58793 100644
--- a/lib/bootstrap.php
+++ b/lib/bootstrap.php
@@ -13,7 +13,7 @@
 const DEFAULT_ENV = 'production';
 
 //software version - please leave it as it is!
-$SOFTWARE_VERSION = '5.2.alpha-svn';
+$SOFTWARE_VERSION = '5.3.alpha-svn';
 
 // Store startup time
 $STUDIP_STARTUP_TIME = microtime(true);