diff --git a/.gitignore b/.gitignore
index c04b646..1cc1669 100644
--- a/.gitignore
+++ b/.gitignore
@@ -77,3 +77,7 @@ SOURCES/nss-3.79.0-6.el8_1.src.rpm
 /firefox-langpacks-128.2.0esr-20240827.tar.xz
 /nss-3.101.0-6.el8_0.src.rpm
 /nss-3.101.0-6.el8_2.src.rpm
+/firefox-128.3.0esr.processed-source.tar.xz
+/firefox-langpacks-128.3.0esr-20240924.tar.xz
+/nss-3.101.0-7.el9_2.src.rpm
+/nss-3.101.0-7.el8_2.src.rpm
diff --git a/firefox.spec b/firefox.spec
index 199c5e4..fdd6204 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -137,7 +137,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        128.2.0
+Version:        128.3.0
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -168,7 +168,7 @@ 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}-20240827.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20240924.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -193,8 +193,8 @@ Source37:       mochitest-python.tar.gz
 # Bundled libraries
 Source401:      nss-setup-flags-env.inc
 Source402:      nspr-4.35.0-1.el8_1.src.rpm
-Source403:      nss-3.101.0-6.el8_2.src.rpm
-Source404:      nss-3.101.0-6.el9_0.src.rpm
+Source403:      nss-3.101.0-7.el8_2.src.rpm
+Source404:      nss-3.101.0-7.el9_2.src.rpm
 
 # ---- RHEL specific patches ---
 # -- Downstream only --
@@ -1860,6 +1860,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Tue Sep 24 2024 Jan Horak <jhorak@redhat.com> - 128.3.0-1
+- Update to 128.3.0
+
 * Tue Aug 27 2024 Jan Horak <jhorak@redhat.com> - 128.2.0-1
 - Update to 128.2.0
 
diff --git a/sources b/sources
index 3201437..e04c615 100644
--- a/sources
+++ b/sources
@@ -1,7 +1,7 @@
 SHA512 (mochitest-python.tar.gz) = 089b1593068b76f4572af0086eaccf52a6a1299bfffb58593206d19bf021ae381f2380bbfeb4371586cd53706ff6dde3d240238b2caf19b96c57dfc2f4524e36
 SHA512 (cbindgen-vendor.tar.xz) = 0c7a40033ccd38dadd30ad064feef390444af4562be07d3dfd0c4cccc55821b01b5228ddee367d0af3bd1b4ef9b1552cdd104506579b020ac1940a7c536b8b68
 SHA512 (nspr-4.35.0-1.el8_1.src.rpm) = 5123a443fcc42602e31104999be339ae899eb7b1f1e2f1ea87ba4f283eb894d08ab568e421dba1df4770f23be91ff88aa6a0748bce7feef31ed88bee5bdecb2c
-SHA512 (nss-3.101.0-6.el9_0.src.rpm) = fc938d719f5677bee44147cd029256c7bbb476c4d8ce89c11f7b24f42b9423b31577a968c552cd491e9b997408fa8789572ff0ce54af54a33e6ec3d703a4cbc5
-SHA512 (firefox-langpacks-128.2.0esr-20240827.tar.xz) = 59fce5e74004700f461f19e2f84f056570eae11607e4893553ee22887464b66d1ed018aca44b20ea9ccd0ecef26a5f2a12ae93671db55593ae202cafe0eb52ab
-SHA512 (firefox-128.2.0esr.processed-source.tar.xz) = f7cb6547b0221e018d1ed3b690248dacc10467057fcfa8befe86f8b6f93e3440f597e89cf34bbc4d0abf1abc7e54618c54b7faef909778a309c359287081a1fc
-SHA512 (nss-3.101.0-6.el8_2.src.rpm) = db1c9e5821b39c60494417a169f14bc2d58006b06f43d2cbf8bfc6fa064d49aacee1543eb17e75c41e428dae9682ee6f7afbef6e4d421656257730656afa0926
+SHA512 (firefox-128.3.0esr.processed-source.tar.xz) = 852d5294da0b60984c337d1f8e6e101713be1014458cf9df21e6da2ea92fc2cd8560ddc1b9dd1db1b09e83843b645d3f6baabfc676adde619a8619f35fc478ad
+SHA512 (firefox-langpacks-128.3.0esr-20240924.tar.xz) = 1d2316d534b354146d70a811ff4eb3afd56c5188143795789acf6918300ebbd46db9a42e2a2ed9390b589336648fe753ed9bfb5d9e30804316f304fbf2ecacfa
+SHA512 (nss-3.101.0-7.el9_2.src.rpm) = 7c325e0e437c1266031af02b3a026d20b789548ae435be6c39d710aa9d19c967ac0a79097fd50dd8ab878bf0d72c19e937d54863aa8cd0654ef2ef288e3102ec
+SHA512 (nss-3.101.0-7.el8_2.src.rpm) = c25551b06cf9239bb54aaf3edaea2c60804b449de4e06af4f5192bc181b5c6468ea8a69ddeff9de1b11bfc123e894b1ce8fc5d6deddfd5062f8736b75db56f8d