diff --git a/.firefox.metadata b/.firefox.metadata
index b93c043..bccb92f 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,6 +1,6 @@
 bc4adac8f38f5103d8f88564a1545063dd8d6402 SOURCES/cbindgen-vendor.tar.xz
-a9954fd295e44461d98abe6729f92985303115d1 SOURCES/firefox-140.8.0esr.processed-source.tar.xz
-bb8098ea3fd6326a81953f7597a4d0a1c0e9c4ae SOURCES/firefox-langpacks-140.8.0esr-20260217.tar.xz
+5d1ea361c6810aab58cec2e1b3f32bf661bd28df SOURCES/firefox-140.9.0esr.processed-source.tar.xz
+ab5b5d13956a8e1e9b3279c4450da7baff6bd783 SOURCES/firefox-langpacks-140.9.0esr-20260318.tar.xz
 2d8a6b2b30d5496735f49ffe8c8a7ede3a78a5ca SOURCES/mochitest-python.tar.gz
 0d0ddbd2a73340b3cbc977997f57222946b1e775 SOURCES/nspr-4.36.0-2.el8_2.src.rpm
 fd3879b176634d66f8ef64d18fdaeec98e140c23 SOURCES/nss-3.112.0-1.el9_4.src.rpm
diff --git a/.gitignore b/.gitignore
index 59e2713..b2a1737 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 SOURCES/cbindgen-vendor.tar.xz
-SOURCES/firefox-140.8.0esr.processed-source.tar.xz
-SOURCES/firefox-langpacks-140.8.0esr-20260217.tar.xz
+SOURCES/firefox-140.9.0esr.processed-source.tar.xz
+SOURCES/firefox-langpacks-140.9.0esr-20260318.tar.xz
 SOURCES/mochitest-python.tar.gz
 SOURCES/nspr-4.36.0-2.el8_2.src.rpm
 SOURCES/nss-3.112.0-1.el9_4.src.rpm
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 2cfbc19..ac81045 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -191,8 +191,8 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        140.8.0
-Release:        2%{?dist}.alma.1
+Version:        140.9.0
+Release:        1%{?dist}.alma.1
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 
@@ -222,7 +222,7 @@ 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}-20260217.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20260318.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -2139,9 +2139,12 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
-* Wed Feb 25 2026 Eduard Abdullin <eabdullin@almalinux.org> - 140.8.0-2.alma.1
+* Fri Mar 27 2026 Eduard Abdullin <eabdullin@almalinux.org> - 140.9.0-1.alma.1
 - Add gcc-toolset-%{gts_version}-gcc-c++ to BR
 
+* Wed Mar 18 2026 Jan Horak <jhorak@redhat.com> - 140.9.0-1
+- Update to 140.9.0 ESR
+
 * Tue Feb 17 2026 Jan Horak <jhorak@redhat.com> - 140.8.0-2
 - Update to 140.8.0 ESR