diff --git a/.gitignore b/.gitignore
index 7bbc314..f5e1cd9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -424,3 +424,5 @@ thunderbird-langpacks-3.1.2-20100803.tar.bz2
 /thunderbird-langpacks-115.4.1-20231025.tar.xz
 /thunderbird-115.4.2.source.tar.xz
 /thunderbird-langpacks-115.4.2-20231108.tar.xz
+/thunderbird-115.4.3.source.tar.xz
+/thunderbird-langpacks-115.4.3-20231115.tar.xz
diff --git a/sources b/sources
index b3370d3..3cc329d 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
 SHA512 (cbindgen-vendor.tar.xz) = 161811f4adfc74e5d92871c78139704d32e1e1ad6b615c85353de300d9647a68f1ca8b1c953f7cc5539d861e9e8d8e42892cae757a3eafea78804e19bc323c16
-SHA512 (thunderbird-115.4.2.source.tar.xz) = 44cedd5931edbac2ab0babfaf0e71a0262317c01fd7d71e8740bb8f54766c9b49b9e325f1d2796c3a233d4298457d8769b675213a21bef759c46086080bcc8bc
-SHA512 (thunderbird-langpacks-115.4.2-20231108.tar.xz) = ad94744d64edd7c2263bf075267657096130c181666625496f5f88d25d7697a43a043e0b49fabde3a3310ecb2fae43f6a41e7935f4181a08446b7e7bc339efb9
+SHA512 (thunderbird-115.4.3.source.tar.xz) = be72f3739a2c3b947031143e1e150cf42131170e7886d29688d4f1e4adc82443f1565f8ea1e95a02448773366c1df6cb198d0f890dfdd7fd7161981b45fbc509
+SHA512 (thunderbird-langpacks-115.4.3-20231115.tar.xz) = 17d2e0a8fe2afa83fb191336d13d795a895f745fd78a3d1713d78c65bf1d3888e2985a1442014e851a757a462964b354208d70da3d17a40f9eb137188ce4caab
diff --git a/thunderbird.spec b/thunderbird.spec
index 3ab6ea7..1bf0fdf 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -76,13 +76,13 @@ ExcludeArch: s390x
 
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        115.4.2
+Version:        115.4.3
 Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPL-2.0 OR GPL-2.0-or-later OR LGPL-2.0-or-later
 Source0:        https://archive.mozilla.org/pub/thunderbird/releases/%{version}%{?pre_version}/source/thunderbird-%{version}%{?pre_version}.source.tar.xz
 %if %{build_langpacks}
-Source1:        thunderbird-langpacks-%{version}-20231108.tar.xz
+Source1:        thunderbird-langpacks-%{version}-20231115.tar.xz
 %endif
 Source3:        get-calendar-langpacks.sh
 Source4:        cbindgen-vendor.tar.xz
@@ -717,6 +717,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Wed Nov 15 2023 Eike Rathke <erack@redhat.com> - 115.4.3-1
+- Update to 115.4.3
+
 * Wed Nov 08 2023 Eike Rathke <erack@redhat.com> - 115.4.2-1
 - Update to 115.4.2