diff --git a/.firefox.metadata b/.firefox.metadata
index 7b99b5a..69db820 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,6 +1,6 @@
 b963b16f6879c5dbe6e33a3a3da058b494453922 SOURCES/cbindgen-vendor.tar.xz
-b28310d67624787206243d4c9eff8496ecb4c9df SOURCES/firefox-115.9.1esr.processed-source.tar.xz
-a69c4cf421b2b0e84142b7a5e47ae382ba9e975b SOURCES/firefox-langpacks-115.9.1esr-20240322.tar.xz
+d20eb93d03020aaeaf53cb59ea9febda3420e7c0 SOURCES/firefox-115.10.0esr.processed-source.tar.xz
+26d7084ec0caa9dff114cdb3fab8cae0c46ba4b4 SOURCES/firefox-langpacks-115.10.0esr-20240409.tar.xz
 2d8a6b2b30d5496735f49ffe8c8a7ede3a78a5ca SOURCES/mochitest-python.tar.gz
 d744f92e874688cc4b5376477dfdd639a97a6cd4 SOURCES/nspr-4.35.0-1.el8_1.src.rpm
 9555ba179bc1398fbacfa2896e45f3808d94ecd2 SOURCES/nss-3.90.0-3.el8_1.src.rpm
diff --git a/.gitignore b/.gitignore
index fcc34b3..cb05f46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 SOURCES/cbindgen-vendor.tar.xz
-SOURCES/firefox-115.9.1esr.processed-source.tar.xz
-SOURCES/firefox-langpacks-115.9.1esr-20240322.tar.xz
+SOURCES/firefox-115.10.0esr.processed-source.tar.xz
+SOURCES/firefox-langpacks-115.10.0esr-20240409.tar.xz
 SOURCES/mochitest-python.tar.gz
 SOURCES/nspr-4.35.0-1.el8_1.src.rpm
 SOURCES/nss-3.90.0-3.el8_1.src.rpm
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 30c0be3..243f4c6 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -132,8 +132,8 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        115.9.1
-Release:        2%{?dist}
+Version:        115.10.0
+Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 
@@ -163,7 +163,7 @@ 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}-20240322.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20240409.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1740,6 +1740,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Tue Apr 09 2024 Eike Rathke <erack@redhat.com> - 115.10.0-1
+- Update to 115.10.0 build1
+
 * Tue Apr 09 2024 Jan Horak <jhorak@redhat.com> - 115.9.1-2
 - Removed expat CVE fix