diff --git a/.gitignore b/.gitignore
index 48d63e5..540f728 100644
--- a/.gitignore
+++ b/.gitignore
@@ -297,3 +297,5 @@
 /firefox-langpacks-91.9.0esr-20220426.tar.xz
 /firefox-91.9.0esr.processed-source.tar.xz
 /firefox-91.9.1esr.processed-source.tar.xz
+/firefox-91.10.0esr.processed-source.tar.xz
+/firefox-langpacks-91.10.0esr-20220524.tar.xz
diff --git a/firefox.spec b/firefox.spec
index 0ce10fb..b5aed95 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -128,7 +128,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        91.9.1
+Version:        91.10.0
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -153,7 +153,7 @@ ExcludeArch:    aarch64 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}-20220520.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20220524.tar.xz
 
 %endif
 Source2:        cbindgen-vendor.tar.xz
@@ -203,7 +203,7 @@ Patch510:        mozilla-bmo1554971.patch
 Patch511:        mozilla-bmo1602730.patch
 Patch512:        mozilla-bmo849632.patch
 Patch513:        mozilla-bmo998749.patch
-Patch514:        mozilla-s390x-skia-gradient.patch
+#Patch514:        mozilla-s390x-skia-gradient.patch
 Patch515:        mozilla-bmo1626236.patch
 Patch518:        D110204-fscreen.diff
 Patch519:        expat-CVE-2022-25235.patch
@@ -1264,6 +1264,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Tue May 24 2022 Eike Rathke <erack@redhat.com> - 91.10.0-1
+- Update to 91.10.0 build1
+
 * Fri May 20 2022 Jan Horak <jhorak@redhat.com> - 91.9.1-1
 - Update to 91.9.1 build1
 
diff --git a/sources b/sources
index 2013242..d83de02 100644
--- a/sources
+++ b/sources
@@ -1,5 +1,5 @@
-SHA512 (firefox-langpacks-91.9.1esr-20220520.tar.xz) = 72b195556cc01c3b5b4c392b7477e2a773d8761640dbc0cc79d00e908cddb7b8e47fd611f0cb511ac97a7258d5abe217cea4ae95fb09bd88ea0dbec9689373c2
 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 (firefox-91.9.1esr.processed-source.tar.xz) = 7f0a34fa2be83e9cb5460a9ba198dd002f8d3217978d6ac3f6ebecc0f7e4b9e6281c3d6db456a024225db340a228c354b821bd6ce6cabf9096d5179b7aefca02
+SHA512 (firefox-91.10.0esr.processed-source.tar.xz) = e2a31ad8b9537b07aae060f883dd4607741c0ecfc74cfa307280e9c5c06a1afd44d4f353a917b20899cf4a70b8ae9428fcee50266e3abc0ebbf73f763f824c0d
+SHA512 (firefox-langpacks-91.10.0esr-20220524.tar.xz) = a5dcbeb7385a90827f2795a32b33196dfe1493b52b74e4044ca088a6e9078dfbfcac18efe45ced63ec9a1f3ed9577a0c7e3e23ad4ccc85f8e85ae0d97675beb9