diff --git a/.gitignore b/.gitignore
index 2a8514d..cdc8ec1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ ipv6calc-0.73.0.tar.gz
 /ipv6calc-2.2.0.tar.gz
 /ipv6calc-3.0.0.tar.gz
 /ipv6calc-3.0.1.tar.gz
+/ipv6calc-3.1.0.tar.gz
diff --git a/ipv6calc.spec b/ipv6calc.spec
index c7576a7..b954caf 100644
--- a/ipv6calc.spec
+++ b/ipv6calc.spec
@@ -15,15 +15,14 @@
 
 Summary:	IPv6 address format change and calculation utility
 Name:		ipv6calc
-Version:	3.0.1
-Release:	48%{?gittag}%{?dist}
+Version:	3.1.0
+Release:	52%{?gittag}%{?dist}
 URL:		http://www.deepspace6.net/projects/%{name}.html
 License:	GPLv2
 %if 0%{?gitcommit:1}
 Source:		https://github.com/pbiering/%{name}/archive/%{gitcommit}/%{name}-%{gitcommit}.tar.gz
 %else
 Source:		ftp://ftp.bieringer.de/pub/linux/IPv6/ipv6calc/%{name}-%{version}.tar.gz
-Patch1:		ipv6calc-3.0.1-c99-fix.patch
 %endif
 BuildRequires:	automake make
 BuildRequires:	gcc
@@ -189,7 +188,6 @@ By default the module is disabled.
 %setup -q -n %{name}-%{gitcommit}
 %else
 %setup -q
-%patch1 -p1
 %endif
 
 %configure \
@@ -351,6 +349,9 @@ fi
 
 
 %changelog
+* Tue May 18 2021 Peter Bieringer <pb@bieringer.de> - 3.1.0-52
+- Final release 3.1.0
+
 * Wed Jan 13 2021 Peter Bieringer <pb@bieringer.de> - 3.0.1-48
 - Final release 3.0.1
 - add ipv6calc-3.0.1-c99-fix.patch
diff --git a/sources b/sources
index efb07d8..0c88deb 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ipv6calc-3.0.1.tar.gz) = 4e655149bf88046926ad1b4ee9bbb5d6d8a5fd2d58d245515844b690c9aa497d03094d79cef14a5eab82ae7acab982924ba2d4d1b667d3048140483fbc272ccd
+SHA512 (ipv6calc-3.1.0.tar.gz) = 6f15acc80851910af3aae0cd3203e619ddaea5cc79c8b3d9cf3bc6024f5f62197fbaf38129e78b94ca41f045a77425114d4ce6071d2d1788ffd48b79b259b4b2