diff --git a/dist b/dist
index 37a6f9cba7a88cbcf8ab13c9187a23e686af9edd..1fe92cf0fdf9c2625d878a2ace258f64c1e8ca44 100644
--- a/dist
+++ b/dist
@@ -1 +1 @@
-an8_9
+an8_10
diff --git a/download b/download
index 1a8c952ebd39611a0bf48f9796e50fcbf6ca2462..11674fe04dd7631046f6cfd9c046731ea207c2f7 100644
--- a/download
+++ b/download
@@ -1,6 +1,6 @@
 9b999bdcf031e29a4d8ce2b6f17e778e  cbindgen-vendor.tar.xz
-bd5c92f18f14e9ea67f04f8269ea2d4d  firefox-115.10.0esr.processed-source.tar.xz
-241a65f86f6ffb4c83fc41270c5ad2a5  firefox-langpacks-115.10.0esr-20240409.tar.xz
+9660760a87290448f4c57dd5ae1948f1  firefox-115.12.0esr.processed-source.tar.xz
+d55b9df7998ee24d6743d072dc4bac42  firefox-langpacks-115.12.0esr-20240604.tar.xz
 b3c1d2ea615cb0195f4f62b005773262  mochitest-python.tar.gz
 7b35b9a003996b1f1dbc3cd936a609f2  nspr-4.35.0-1.el8_1.src.rpm
 3fdd30cefe44a98c424cb3aeca73f2b3  nss-3.90.0-3.el8_1.src.rpm
diff --git a/firefox-anolis-default-prefs.js b/firefox-anolis-default-prefs.js
index c301dbf8c9193c223772d6c6cc398c3d3cfa73f6..a80e51fa53d99e988c9b40c83bf1342b23449f97 100644
--- a/firefox-anolis-default-prefs.js
+++ b/firefox-anolis-default-prefs.js
@@ -18,12 +18,14 @@ pref("startup.homepage_override_url",       "https://openanolis.cn/");
 pref("startup.homepage_welcome_url",        "https://openanolis.cn/");
 pref("browser.startup.homepage",            "data:text/plain,browser.startup.homepage=file:///usr/share/doc/HTML/index.html");
 pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
-pref("media.gmp-gmpopenh264.autoupdate",true);
+pref("media.gmp-gmpopenh264.provider.enabled",false);
+pref("media.gmp-gmpopenh264.autoupdate",false);
 pref("media.gmp-gmpopenh264.enabled",false);
 pref("media.gmp.decoder.enabled", true);
 pref("plugins.notifyMissingFlash", false);
 /* See https://bugzilla.redhat.com/show_bug.cgi?id=1226489 */
 pref("browser.display.use_system_colors", false);
+pref("layers.use-image-offscreen-surfaces", false);
 /* Allow sending credetials to all https:// sites */
 pref("network.negotiate-auth.trusted-uris", "https://");
 pref("security.use_sqldb", false);
diff --git a/firefox.spec b/firefox.spec
index d59fdcf405308b753662d27808b3381bfc8b98ab..1288f61977e93b4cca1abed0ce8e5d8e774d98e9 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -37,7 +37,7 @@ function dist_to_rhel_minor(str, start)
   end
   match = string.match(str, ".el9")
   if match then
-     return 4
+     return 5
   end
   return -1
 end}
@@ -133,7 +133,7 @@ end}
 
 Summary:              Mozilla Firefox Web browser
 Name:                 firefox
-Version:              115.10.0
+Version:              115.12.0
 Release:              1%{anolis_release}%{?dist}
 URL:                  https://www.mozilla.org/firefox/
 License:              MPLv1.1 or GPLv2+ or LGPLv2+
@@ -166,7 +166,7 @@ ExcludeArch:          aarch64 s390 ppc
 # Link to original tarball: https://archive.mozilla.org/pub/firefox/releases/%%{version}%%{?pre_version}/source/firefox-%%{version}%%{?pre_version}.source.tar.xz
 Source0:              firefox-%{version}%{?pre_version}%{?buildnum}.processed-source.tar.xz
 %if %{with langpacks}
-Source1:              firefox-langpacks-%{version}%{?pre_version}-20240409.tar.xz
+Source1:              firefox-langpacks-%{version}%{?pre_version}-20240604.tar.xz
 %endif
 Source2:              cbindgen-vendor.tar.xz
 Source3:              process-official-tarball
@@ -1125,8 +1125,8 @@ echo "ac_add_options --with-google-location-service-api-keyfile=`pwd`/google-loc
 echo "ac_add_options --with-google-safebrowsing-api-keyfile=`pwd`/google-api-key" >> .mozconfig
 
 # May result in empty --with-libclang-path= in earlier versions.
-# So far this is needed only for c8s/c9s.
-%if (0%{?rhel} == 8 && %{rhel_minor_version} >= 10) || (0%{?rhel} == 9 && %{rhel_minor_version} >= 4)
+# So far this is needed only for c8s.
+%if 0%{?rhel} == 8 && %{rhel_minor_version} >= 10
 # Clang 17 upstream's detection fails, tell it where to look.
 echo "ac_add_options --with-libclang-path=`llvm-config --libdir`" >> .mozconfig
 %endif
@@ -1743,10 +1743,16 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
-* Mon Apr 22 2024 Liwei Ge <geliwei@openanolis.org> - 115.10.0-1.0.1
+* Tue Jun 18 2024 Liwei Ge <geliwei@openanolis.org> - 115.12.0-1.0.1
 - Add firefox-anolis-default-prefs.js
 - Remove bookmarks and loongarch64
 
+* Tue Jun 04 2024 Eike Rathke <erack@redhat.com> - 115.12.0-1
+- Update to 115.12.0 build1
+
+* Tue May 07 2024 Eike Rathke <erack@redhat.com> - 115.11.0-1
+- Update to 115.11.0 build1
+
 * Tue Apr 09 2024 Eike Rathke <erack@redhat.com> - 115.10.0-1
 - Update to 115.10.0 build1