diff --git a/Makefile b/Makefile
index 2d578bd..2304869 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 # $Id$
 #
 
-VERSION?=5.0
+VERSION?=5.1
 TAGVERSION=$(shell echo $(VERSION) | sed 's/\./_/g')
 BALL_TAR_GZ=UMLGraph-$(VERSION).tar.gz
 ZIPBALL=UMLGraph-$(VERSION).zip