diff --git a/srcpkgs/thunderbird/template b/srcpkgs/thunderbird/template
index b5f58c115a8..08fa19c7460 100644
--- a/srcpkgs/thunderbird/template
+++ b/srcpkgs/thunderbird/template
@@ -3,7 +3,7 @@
 # THIS PKG MUST BE SYNCHRONIZED WITH "srcpkgs/thunderbird-i18n".
 #
 pkgname=thunderbird
-version=128.4.0
+version=128.4.2
 revision=1
 build_helper="rust"
 short_desc="Standalone Mail/News reader"
@@ -11,7 +11,7 @@ maintainer="dataCobra <datacobra@thinkbot.de>"
 license="MPL-2.0, GPL-2.0-or-later, LGPL-2.1-or-later"
 homepage="https://www.thunderbird.net/"
 distfiles="${MOZILLA_SITE}/thunderbird/releases/${version}esr/source/thunderbird-${version}esr.source.tar.xz"
-checksum=81f43a2680412a6afdb5fdf6b8296c92d0d6812892399b174723c4f753d5429f
+checksum=6fa81eeabb89f02792738718168586bd75c07dc9256e79b26438da70e80dd0d8
 
 lib32disabled=yes