diff --git a/.firefox.metadata b/.firefox.metadata
index 19f80b6..49d14a0 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,5 +1,5 @@
 c822547dbc12e2baebdfdfb38b665e23f0c2513a SOURCES/cbindgen-vendor.tar.xz
-322e0ffb8b442f599b0f5dd695e6f83050b3dc82 SOURCES/firefox-91.4.0esr.processed-source.tar.xz
-74a1b8c9a5f4a96f80af2d3fe542495e3af2423a SOURCES/firefox-langpacks-91.4.0esr-20211201.tar.xz
+7a15042e733a831ee519372eef5b50fdc0becdde SOURCES/firefox-91.5.0esr.processed-source.tar.xz
+4a72e79ba3d0861cad3e229ef54e66014f65447b SOURCES/firefox-langpacks-91.5.0esr-20220106.tar.xz
 b5fd1332d8e0d37339ae170c7bebcb63a40b22e0 SOURCES/nspr-4.32.0-1.el8_1.src.rpm
 8fff814901e03c2518ede2f8992d898f5ba61ed9 SOURCES/nss-3.67.0-7.el8_1.src.rpm
diff --git a/.gitignore b/.gitignore
index e79811e..1c80fd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 SOURCES/cbindgen-vendor.tar.xz
-SOURCES/firefox-91.4.0esr.processed-source.tar.xz
-SOURCES/firefox-langpacks-91.4.0esr-20211201.tar.xz
+SOURCES/firefox-91.5.0esr.processed-source.tar.xz
+SOURCES/firefox-langpacks-91.5.0esr-20220106.tar.xz
 SOURCES/nspr-4.32.0-1.el8_1.src.rpm
 SOURCES/nss-3.67.0-7.el8_1.src.rpm
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 4881f9f..3e1edd1 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -130,7 +130,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        91.4.0
+Version:        91.5.0
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -138,10 +138,14 @@ License:        MPLv1.1 or GPLv2+ or LGPLv2+
 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://hg.mozilla.org/releases/mozilla-release/archive/firefox-%%{version}%%{?pre_version}.source.tar.xz
 Source0:        firefox-%{version}%{?pre_version}.processed-source.tar.xz
 %if %{build_langpacks}
-Source1:        firefox-langpacks-%{version}%{?pre_version}-20211201.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20220106.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1245,6 +1249,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Thu Jan 06 2022 Eike Rathke <erack@redhat.com> - 91.5.0-1
+- Update to 91.5.0 build1
+
 * Wed Dec 01 2021 Eike Rathke <erack@redhat.com> - 91.4.0-1
 - Update to 91.4.0 build1