diff --git a/.gitignore b/.gitignore
index b524527..b8a327f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,5 @@
 /thunderbird-91.9.0.processed-source.tar.xz
 /thunderbird-langpacks-91.9.0-20220502.tar.xz
 /thunderbird-langpacks-91.9.0-20220503.tar.xz
+/thunderbird-91.9.1.processed-source.tar.xz
+/thunderbird-langpacks-91.9.1-20220523.tar.xz
diff --git a/sources b/sources
index 7008db2..73fa279 100644
--- a/sources
+++ b/sources
@@ -1,5 +1,5 @@
 SHA512 (cbindgen-vendor.tar.xz) = 9cb4a590584c53386a14deb1f1faf7b67ff8f312eff4a8dccab710738183c504387d69fa660021b495ed61603f4df1db689f35234c61e2e886962e40aab20c95
 SHA512 (nss-3.67.0-7.el8_1.src.rpm) = 15361c596fc4f2e4afc7d40d48c37886cad93849821d2bcad8213f34035a6951be127b436b6799083f2b4adb18a68870dbe273177d2d670eda9cc9680e6d6f63
 SHA512 (nspr-4.32.0-1.el8_1.src.rpm) = c181a19bc24aeb62aed1745a6a43ae8aa2ee0d903aa16cb6ec7d385286e60f6426049cc9669459434377a215f329502ffe6fc48a1edc52d5b3283ebc259e9dca
-SHA512 (thunderbird-langpacks-91.9.0-20220503.tar.xz) = 06a5924ed101ef967d8b58ffaab4bba9dad2cc12ab7ffc8f8315d8a8cbdf8205cbf4394bf41a7d520a698498fd5b2dad1c9f27403f9970069b8bd2ebb1ab48fa
-SHA512 (thunderbird-91.9.0.processed-source.tar.xz) = 92feb431cc9b0d8c35cc7605868a88b67d584be018b0a6d225ae925d753111795fad31d799d891baf69f88627394f522168c529e00b777325e5c95b680b6e27d
+SHA512 (thunderbird-91.9.1.processed-source.tar.xz) = 6510675227bfa3713f240f5632bf02f8297b0d4d5a61a75ec40be84730c0ebd0b1b41dc4260d2b88764ad2970cd501d7910663149fb61fd200397652dfc87b3d
+SHA512 (thunderbird-langpacks-91.9.1-20220523.tar.xz) = 067792733af5e0025963f574852a151d6744c8e51562a7bdd7378558724a1dd524e6d6108ac2b1ea416677635b9b1ff8cb08943be89901d96193f68c6c2baee4
diff --git a/thunderbird.spec b/thunderbird.spec
index a02ae8d..b49bd8c 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -127,8 +127,8 @@ end}
 %global build_langpacks         1
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        91.9.0
-Release:        3%{?dist}
+Version:        91.9.1
+Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -150,7 +150,7 @@ ExcludeArch:    s390 ppc
 # 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}-20220503.tar.xz
+Source1:        thunderbird-langpacks-%{version}%{?ext_version}-20220523.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        get-calendar-langpacks.sh
@@ -1107,6 +1107,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Mon May 23 2022 Jan Horak <jhorak@redhat.com> - 91.9.1-1
+- Update to 91.9.1 build1
+
 * Tue May 03 2022 Eike Rathke <erack@redhat.com> - 91.9.0-3
 - Update to 91.9.0 build3