diff --git a/nauty.spec b/nauty.spec
index 859bdb2..3506ccb 100644
--- a/nauty.spec
+++ b/nauty.spec
@@ -3,7 +3,7 @@
 
 Name:           nauty
 Version:        %(tr r . <<< %{nautybasever})
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Graph canonical labeling and automorphism group computation
 
 License:        ASL 2.0
@@ -128,6 +128,9 @@ LD_LIBRARY_PATH=$PWD/.libs make check
 %{_libdir}/pkgconfig/%{name}.pc
 
 %changelog
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.7.1-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Tue Jan 05 2021 Timm Bäder <tbaeder@redhat.com> - 2.7.1-3
 - Enable runtime popcount support on clang