diff --git a/thunderbird.spec b/thunderbird.spec
index 0e80527..8887cb6 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -178,7 +178,7 @@ end}
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
 Version:        78.12.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -1317,6 +1317,10 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Tue Aug 10 2021 Mohan Boddu <mboddu@redhat.com> - 78.12.0-4
+- Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
+  Related: rhbz#1991688
+
 * Fri Jul 30 2021 Tomas Popela <tpopela@redhat.com> - 78.12.0-3
 - Add script to process the official tarball to comply with PELC review
 - Fix the build with newer glibc