diff --git a/firefox.spec b/firefox.spec
index a37a7b4..c1dc14a 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -118,7 +118,7 @@ ExcludeArch: s390x
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
 Version:        78.0.2
-Release:        4%{?dist}
+Release:        5%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Source0:        https://archive.mozilla.org/pub/firefox/releases/%{version}%{?pre_version}/source/firefox-%{version}%{?pre_version}.source.tar.xz
@@ -977,6 +977,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Mon Jul 27 2020 Fedora Release Engineering <releng@fedoraproject.org> - 78.0.2-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
+
 * Thu Jul 23 2020 Frantisek Zatloukal <fzatlouk@redhat.com> - 78.0-4
 - Use python3 instead of python2 for build