diff --git a/zlib-ada.spec b/zlib-ada.spec
index 35859a2..91bb7fb 100644
--- a/zlib-ada.spec
+++ b/zlib-ada.spec
@@ -1,6 +1,6 @@
 Name:           zlib-ada
 Version:        1.4
-Release:        0.27.20120830CVS%{?dist}
+Release:        0.28.20120830CVS%{?dist}
 Summary:        Zlib for Ada
 Summary(sv):    Zlib för ada
 
@@ -86,6 +86,9 @@ cp --preserve=timestamps %{SOURCE3} %{buildroot}%{_GNAT_project_dir}/
 
 
 %changelog
+* Thu Jan 28 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.4-0.28.20120830CVS
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Tue Dec  8 2020 Pavel Zhukov <pzhukov@redhat.com> - 1.4-0.27.20120830CVS
 - Rebuild with new libgnat