diff --git a/.gitignore b/.gitignore
index dfc9c91..115ad83 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 SOURCES/cbindgen-vendor.tar.xz
 SOURCES/nspr-4.32.0-1.el8_1.src.rpm
 SOURCES/nss-3.67.0-6.el8_1.src.rpm
-SOURCES/thunderbird-91.2.0.processed-source.tar.xz
-SOURCES/thunderbird-langpacks-91.2.0-20211004.tar.xz
+SOURCES/thunderbird-91.3.0.processed-source.tar.xz
+SOURCES/thunderbird-langpacks-91.3.0-20211102.tar.xz
diff --git a/.thunderbird.metadata b/.thunderbird.metadata
index 2b81033..c13e973 100644
--- a/.thunderbird.metadata
+++ b/.thunderbird.metadata
@@ -1,5 +1,5 @@
 c822547dbc12e2baebdfdfb38b665e23f0c2513a SOURCES/cbindgen-vendor.tar.xz
 b5fd1332d8e0d37339ae170c7bebcb63a40b22e0 SOURCES/nspr-4.32.0-1.el8_1.src.rpm
 29da2158892dc108a7a21fd8411fccf0061481b3 SOURCES/nss-3.67.0-6.el8_1.src.rpm
-2718ffc68ab8a974d7c5f4fed2feef637afc922a SOURCES/thunderbird-91.2.0.processed-source.tar.xz
-c0f7fa09fae67f8ce49bbc14606691277c32e3d5 SOURCES/thunderbird-langpacks-91.2.0-20211004.tar.xz
+b46bdec3cb1e38095ad6862e2368e1ae21047fee SOURCES/thunderbird-91.3.0.processed-source.tar.xz
+13db069583d772237cfe01779476867d11ba2ed6 SOURCES/thunderbird-langpacks-91.3.0-20211102.tar.xz
diff --git a/SPECS/thunderbird.spec b/SPECS/thunderbird.spec
index 27df591..2e01399 100644
--- a/SPECS/thunderbird.spec
+++ b/SPECS/thunderbird.spec
@@ -19,7 +19,7 @@ function dist_to_rhel_minor(str, start)
   end
   match = string.match(str, ".el8")
   if match then
-     return 5
+     return 6
   end
   return -1
 end}
@@ -128,8 +128,8 @@ end}
 %global build_langpacks         1
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        91.2.0
-Release:        1%{?dist}
+Version:        91.3.0
+Release:        2%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -148,10 +148,10 @@ ExcludeArch:    s390 ppc
 # licenses that are rejected by Red Hat Legal.
 # The official tarball has to be always processed by the process-official-tarball
 # script.
-# Link to official tarball: https://hg.mozilla.org/releases/mozilla-release/archive/firefox-%%{version}%%{?pre_version}.source.tar.xz
+# Link to official tarball: https://archive.mozilla.org/pub/thunderbird/releases/%%{version}%%{?pre_version}/source/thunderbird-%%{version}%%{?pre_version}.source.tar.xz
 Source0:        thunderbird-%{version}%{?pre_version}.processed-source.tar.xz
 %if %{build_langpacks}
-Source1:        thunderbird-langpacks-%{version}%{?ext_version}-20211004.tar.xz
+Source1:        thunderbird-langpacks-%{version}%{?ext_version}-20211102.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        get-calendar-langpacks.sh
@@ -502,7 +502,7 @@ echo "ac_add_options --disable-debug-symbols" >> .mozconfig
 %endif
 
 # AV1 requires newer nasm that was rebased in 8.4
-%if 0%{?rhel} == 7 || (0%{?rhel} == 8 && %{rhel_minor_version} < 4)
+%if 0%{?rhel} == 7 || (0%{?rhel} == 8 && 0%{rhel_minor_version} < 4)
 echo "ac_add_options --disable-av1" >> .mozconfig
 %endif
 
@@ -1151,6 +1151,12 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Tue Nov 02 2021 Eike Rathke <erack@redhat.com> - 91.3.0-2
+- Update to 19.3.0 build2
+
+* Mon Nov 01 2021 Eike Rathke <erack@redhat.com> - 91.3.0-1
+- Update to 91.3.0 build1
+
 * Mon Oct 04 2021 Eike Rathke <erack@redhat.com> - 91.2.0-1
 - Update to 91.2.0 build1