diff --git a/mathomatic.spec b/mathomatic.spec
index 2eadf5f..0382259 100644
--- a/mathomatic.spec
+++ b/mathomatic.spec
@@ -1,7 +1,7 @@
 Summary:       Small, portable symbolic math program
 Name:          mathomatic
 Version:       16.0.5
-Release:       11%{?dist}
+Release:       12%{?dist}
 License:       LGPLv2
 Group:         Applications/Engineering
 URL:           http://www.mathomatic.org/math/
@@ -93,6 +93,9 @@ make test
 %{_mandir}/man1/primorial.1*
 
 %changelog
+* Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 16.0.5-12
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 16.0.5-11
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild