diff --git a/clipper.spec b/clipper.spec
index a0310ab..44bf209 100644
--- a/clipper.spec
+++ b/clipper.spec
@@ -2,7 +2,7 @@ Name: clipper
 Summary: Clipper C++ crystallographic library
 URL: ftp://ftp.ccp4.ac.uk/opensource/
 Version: 2.1
-Release: 20160714.1%{?dist}
+Release: 20160715.1%{?dist}
 License: LGPLv2+
 Source0: ftp://ftp.ccp4.ac.uk/opensource/%{name}-%{version}.20160708.tar.gz
 Patch0: clipper-pkgconfig.patch
@@ -73,6 +73,9 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/*.la
 %{_libdir}/pkgconfig/clipper.pc
 
 %changelog
+* Wed Jul 24 2019 Fedora Release Engineering <releng@fedoraproject.org> - 2.1-20160715.1
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
+
 * Thu Jan 31 2019 Fedora Release Engineering <releng@fedoraproject.org> - 2.1-20160714.1
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild