diff --git a/lib/bootstrap.php b/lib/bootstrap.php
index 608f929805d40baa216538bed1601b6f878d61ac..da363a0df57ed3f2ec01ec87dbb1c9952470ace4 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!
-$SOFTWARE_VERSION = '5.1.alpha-svn';
+$SOFTWARE_VERSION = '5.1';
 
 // Store startup time
 $STUDIP_STARTUP_TIME = microtime(true);