diff --git a/ipv6calc.spec b/ipv6calc.spec
index d941183..d177790 100644
--- a/ipv6calc.spec
+++ b/ipv6calc.spec
@@ -15,8 +15,8 @@
 
 Summary:	IPv6 address format change and calculation utility
 Name:		ipv6calc
-Version:	3.2.0
-Release:	56%{?gittag}%{?dist}
+Version:	4.0.0
+Release:	61%{?gittag}%{?dist}
 URL:		http://www.deepspace6.net/projects/%{name}.html
 License:	GPLv2
 %if 0%{?gitcommit:1}
@@ -353,6 +353,9 @@ fi
 
 
 %changelog
+* Tue Oct 19 2021 Peter Bieringer <pb@bieringer.de> - 4.0.0-61
+- Final release 4.0.0
+
 * Wed Jul 14 2021 Peter Bieringer <pb@bieringer.de> - 3.2.0-56
 - Final release 3.2.0