diff --git a/polymake.spec b/polymake.spec
index c86bd2f..c53e763 100644
--- a/polymake.spec
+++ b/polymake.spec
@@ -16,7 +16,7 @@
 
 Name:           polymake
 Version:        2.13
-Release:        20%{?gitdate:.git%{gitdate}}%{?dist}
+Release:        21%{?gitdate:.git%{gitdate}}%{?dist}
 Summary:        Algorithms on convex polytopes and polyhedra
 
 License:        GPLv2+
@@ -259,6 +259,9 @@ sed -i 's,%{buildroot},,' %{buildroot}%{polydir}/bundled/singular/conf.make
 %doc doc/*
 
 %changelog
+* Sat May 02 2015 Kalev Lember <kalevlember@gmail.com> - 2.13-21.git20141013
+- Rebuilt for GCC 5 C++11 ABI change
+
 * Sat Mar  7 2015 Jerry James <loganjerry@gmail.com> - 2.13-20.git20141013
 - Rebuild with Singular support