diff --git a/xhtml1-dtds.spec b/xhtml1-dtds.spec
index 59dd706..1ddb96c 100644
--- a/xhtml1-dtds.spec
+++ b/xhtml1-dtds.spec
@@ -1,8 +1,9 @@
 %global date    20020801
+%global baserelease 14
 
 Name:           xhtml1-dtds
 Version:        1.0
-Release:        %{date}.13%{?dist}.11
+Release:        %{date}.%{baserelease}%{?dist}
 Summary:        XHTML 1.0 document type definitions
 
 # W3C Software License for DTDs etc:
@@ -112,6 +113,9 @@ cd - >/dev/null
 
 
 %changelog
+* Mon Aug 23 2021 Florian Weimer <fweimer@redhat.com> - 1.0-20020801.14
+- Add %%baserelease to help future mass rebuilds
+
 * Fri Jul 23 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.0-20020801.13.11
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild