diff --git a/.gitignore b/.gitignore
index 401e056..28d44ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -381,3 +381,5 @@
 /firefox-langpacks-128.10.0esr-20250422.tar.xz
 /firefox-128.10.1esr.processed-source.tar.xz
 /firefox-langpacks-128.10.1esr-20250519.tar.xz
+/firefox-128.11.0esr.processed-source.tar.xz
+/firefox-langpacks-128.11.0esr-20250521.tar.xz
diff --git a/firefox.spec b/firefox.spec
index 338bb25..147e882 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -174,7 +174,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        128.10.1
+Version:        128.11.0
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -205,7 +205,7 @@ 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}-20250519.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20250521.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1999,6 +1999,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Wed May 21 2025 Eike Rathke <erack@redhat.com> - 128.11.0-1
+- Update to 128.11.0
+
 * Mon May 19 2025 Eike Rathke <erack@redhat.com> - 128.10.1-1
 - Update to 128.10.1
 
diff --git a/sources b/sources
index 6d39817..0a0efd1 100644
--- a/sources
+++ b/sources
@@ -4,5 +4,5 @@ SHA512 (nspr-4.35.0-1.el8_1.src.rpm) = 5123a443fcc42602e31104999be339ae899eb7b1f
 SHA512 (nss-3.101.0-7.el9_2.src.rpm) = 7c325e0e437c1266031af02b3a026d20b789548ae435be6c39d710aa9d19c967ac0a79097fd50dd8ab878bf0d72c19e937d54863aa8cd0654ef2ef288e3102ec
 SHA512 (nss-3.101.0-7.el8_2.src.rpm) = c25551b06cf9239bb54aaf3edaea2c60804b449de4e06af4f5192bc181b5c6468ea8a69ddeff9de1b11bfc123e894b1ce8fc5d6deddfd5062f8736b75db56f8d
 SHA512 (wasi-sdk-20.tar.gz) = 95be9d9b41ed1f7884e9cd68bad22abbb355b049fd09731c89b9e36666d0205b1a16ec9c21820adf0c5a34e2048015cbfbef0542170d466fa3336c636873c405
-SHA512 (firefox-128.10.1esr.processed-source.tar.xz) = 5032c6bce82428fc31e153ed9ec775156b9074c87a6a34b78d1850ff6517c93f05548eb76e39475de858e1fab061382d0ca5a6ecbd0face045d775acd5f65178
-SHA512 (firefox-langpacks-128.10.1esr-20250519.tar.xz) = 5677006bc2258a9c422b641d8538c8be5ae97b1b5eee50417f281063370834baf4ab01f7212c4c7b4b1d1920976ae9e90d4783c9c872b80d066ce49853e065fe
+SHA512 (firefox-128.11.0esr.processed-source.tar.xz) = 9a4b6bc9a8d3a756ba0ef2e136429c0240b6e8332c21d1fd6371d305daeadcacd6a3e115141346032dcd0b8809d10cd9e501bbe056f7badf8bed3903778d455a
+SHA512 (firefox-langpacks-128.11.0esr-20250521.tar.xz) = 8d75e6ebc55bf2a65f22ea3a3cece14b2dca789f7cb7142a9e1be551734a62756edaff64f44048d59aede529913c91e4dfa3ac03bfb4eabfed078df7a00049f6