diff --git a/lib/bootstrap.php b/lib/bootstrap.php
index f4c08b39fef9328dad54583d769a090952a9e720..3c42ee232b7dca60037965b0883d052ddd2d88d1 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!
-$SOFTWARE_VERSION = '5.5.2';
+$SOFTWARE_VERSION = '5.5.3';
 
 // Store startup time
 $STUDIP_STARTUP_TIME = microtime(true);