diff --git a/ipv6calc.spec b/ipv6calc.spec
index 5840a03..837f3dc 100644
--- a/ipv6calc.spec
+++ b/ipv6calc.spec
@@ -3,7 +3,7 @@
 Summary:	IPv6 address format change and calculation utility
 Name:		ipv6calc
 Version:	0.99.0%{?headtag}
-Release:	11%{?dist}
+Release:	12%{?dist}
 Group:		Applications/Text
 URL:		http://www.deepspace6.net/projects/%{name}.html
 License:	GPLv2
@@ -233,6 +233,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Wed Jun 17 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.99.0-12
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
+
 * Sat Jun 06 2015 Jitka Plesnikova <jplesnik@redhat.com> - 0.99.0-11
 - Perl 5.22 rebuild