diff --git a/.gitignore b/.gitignore
index c44b9e4..ba5d6d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -331,3 +331,5 @@ thunderbird-langpacks-3.1.2-20100803.tar.bz2
 /thunderbird-langpacks-78.11.0-20210602.tar.xz
 /thunderbird-78.12.0.source.tar.xz
 /thunderbird-langpacks-78.12.0-20210721.tar.xz
+/thunderbird-91.0.2.source.tar.xz
+/thunderbird-langpacks-91.0.2-20210823.tar.xz
diff --git a/sources b/sources
index 2ac88d1..d0dcb99 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
-SHA512 (thunderbird-78.12.0.source.tar.xz) = 8a9275f6a454b16215e9440d8b68926e56221dbb416f77ea0cd0a42853bdd26f35514e792564879c387271bd43d8ee966577f133f8ae7781f43e8bec9ab78696
-SHA512 (thunderbird-langpacks-78.12.0-20210721.tar.xz) = 3905fee11ad6c5b468d95a55bf3200a4be30b1d87a00b77945962873a9567b2a1a7e9ab78ac902f75cbbcb722c4579044f6699353c1a7e39e175bfc530dbd318
-SHA512 (cbindgen-vendor-0.14.3.tar.xz) = 33c8d28547674121f690eea0d3ebac33926a39caacac787bf8ed8b346478822e74da5a4a1f57ab4df4105fa8376739a2ece888845a85bc5712aaed20e4a508bc
+SHA512 (thunderbird-91.0.2.source.tar.xz) = 468be2f5024fd32eb22a661ed5f30de5d74231ee736e6743a9fb84e747bf45fceaaf286a5cbb20eb41f8ab98e0c56310eab3d2e6077fd81ee0ef52b28c33a3f2
+SHA512 (thunderbird-langpacks-91.0.2-20210823.tar.xz) = 23f9b1087ef11d79dbee4c906e1c70c1a16abc4f83278f0f30da8b2fdda55d699c98199a0ecccf3298239b68f93e2b8ce4fcbb34f7babfd0c73da63478d16d7c
+SHA512 (cbindgen-vendor.tar.xz) = cb6a75b50e598aa686c42ca3927a15f4a6595c074a0dc2ac3c5768658666b55f7f42f3fb8cadabaabe509537bca62102c71017ffa1526c4daa0e7732ee476724
diff --git a/thunderbird.spec b/thunderbird.spec
index dd41faf..34f2070 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -89,16 +89,16 @@ ExcludeArch: s390x
 
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        91.0
+Version:        91.0.2
 Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 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}-20210816.tar.xz
+Source1:        thunderbird-langpacks-%{version}-20210823.tar.xz
 %endif
 Source3:        get-calendar-langpacks.sh
-Source4:        cbindgen-vendor-0.14.3.tar.xz
+Source4:        cbindgen-vendor.tar.xz
 
 Source10:       thunderbird-mozconfig
 Source11:       thunderbird-mozconfig-branded
@@ -766,6 +766,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Mon Aug 23 2021 Jan Horak <jhorak@redhat.com> - 91.0.2-1
+- Update to 91.0.2 build1
+
 * Mon Aug 16 2021 Jan Horak <jhorak@redhat.com> - 91.0-1
 - Update to 91.0 build1