diff --git a/.gitignore b/.gitignore
index 114f12d..e35827a 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-3.67.0-7.el8_1.src.rpm
-SOURCES/thunderbird-91.4.0.processed-source.tar.xz
-SOURCES/thunderbird-langpacks-91.4.0-20211206.tar.xz
+SOURCES/thunderbird-91.5.0.processed-source.tar.xz
+SOURCES/thunderbird-langpacks-91.5.0-20220107.tar.xz
diff --git a/.thunderbird.metadata b/.thunderbird.metadata
index 4f4bb2b..df739f9 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
 8fff814901e03c2518ede2f8992d898f5ba61ed9 SOURCES/nss-3.67.0-7.el8_1.src.rpm
-b547aff4246db7d2c7c6e9ff0f0be49ead13bfdb SOURCES/thunderbird-91.4.0.processed-source.tar.xz
-3d730091ab572437549ce4271b407c39b3289045 SOURCES/thunderbird-langpacks-91.4.0-20211206.tar.xz
+96483930beccc90117f19d77eb57f982aad086ea SOURCES/thunderbird-91.5.0.processed-source.tar.xz
+db0eadc8a9ece29e56420ad74faf0df3545acbe8 SOURCES/thunderbird-langpacks-91.5.0-20220107.tar.xz
diff --git a/SOURCES/python-missing-utimensat.patch b/SOURCES/python-missing-utimensat.patch
deleted file mode 100644
index d19ecab..0000000
--- a/SOURCES/python-missing-utimensat.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -up python3/Python-3.6.8/configure.old python3/Python-3.6.8/configure
---- Python-3.6.8/configure.old	2019-10-01 12:56:35.074551835 +0200
-+++ Python-3.6.8/configure	2019-10-01 12:56:44.240517798 +0200
-@@ -11438,7 +11438,7 @@ for ac_func in alarm accept4 setitimer g
-  sigaction sigaltstack siginterrupt sigpending sigrelse \
-  sigtimedwait sigwait sigwaitinfo snprintf strftime strlcpy symlinkat sync \
-  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
-- truncate uname unlinkat unsetenv utimensat utimes waitid waitpid wait3 wait4 \
-+ truncate uname unlinkat unsetenv utimes waitid waitpid wait3 wait4 \
-  wcscoll wcsftime wcsxfrm wmemcmp writev _getpty
- do :
-   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
diff --git a/SPECS/thunderbird.spec b/SPECS/thunderbird.spec
index f7f8e4a..44d9138 100644
--- a/SPECS/thunderbird.spec
+++ b/SPECS/thunderbird.spec
@@ -128,8 +128,8 @@ end}
 %global build_langpacks         1
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        91.4.0
-Release:        3%{?dist}
+Version:        91.5.0
+Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -138,10 +138,14 @@ Group:          Applications/Internet
 ExcludeArch:    %{ix86}
 %endif
 %if 0%{?rhel} == 8
+  %if %{rhel_minor_version} == 1
+ExcludeArch:    %{ix86} aarch64 s390x
+  %else
 ExcludeArch:    %{ix86}
+  %endif
 %endif
 %if 0%{?rhel} == 7
-ExcludeArch:    s390 ppc
+ExcludeArch:    aarch64 s390 ppc
 %endif
 
 # We can't use the official tarball as it contains some test files that use
@@ -151,7 +155,7 @@ 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}-20211206.tar.xz
+Source1:        thunderbird-langpacks-%{version}%{?ext_version}-20220107.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        get-calendar-langpacks.sh
@@ -172,7 +176,6 @@ Source402:      nspr-4.32.0-1.el8_1.src.rpm
 # Build patches
 # workaround for https://bugzilla.redhat.com/show_bug.cgi?id=1699374
 Patch1001:      build-ppc64le-inline.patch
-Patch1003:      python-missing-utimensat.patch
 Patch1008:        build-rhel7-nasm-dwarf.patch
 Patch1009:        build-debuginfo-fix.patch
 # workaround for https://bugzilla.redhat.com/show_bug.cgi?id=1699374
@@ -638,7 +641,7 @@ function build_bundled_package() {
   echo $PKG_CONFIG_PATH
 
   rpm -ivh %{SOURCE403}
-  rpmbuild --nodeps --define '_prefix %{bundled_install_path}' -ba %{_specdir}/nss.spec
+  rpmbuild --nodeps --define '_prefix %{bundled_install_path}' --without=tests -ba %{_specdir}/nss.spec
   pushd %{_buildrootdir}
   #cleanup
   #rm -rf {_buildrootdir}/usr/lib/debug/*
@@ -1159,6 +1162,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Fri Jan 07 2022 Eike Rathke <erack@redhat.com> - 91.5.0-1
+- Update to 91.5.0 build1
+
 * Tue Dec 07 2021 Eike Rathke <erack@redhat.com> - 91.4.0-3
 - Bump NVR for ppc64 build