diff --git a/pkgs/applications/networking/browsers/firefox/common.nix b/pkgs/applications/networking/browsers/firefox/common.nix
index 9e3a08cb6668..f7c4990fe2ee 100644
--- a/pkgs/applications/networking/browsers/firefox/common.nix
+++ b/pkgs/applications/networking/browsers/firefox/common.nix
@@ -219,7 +219,7 @@ buildStdenv.mkDerivation ({
     "profilingPhase"
   ];
 
-  patches = [
+  patches = lib.optionals (lib.versionOlder version "103") [
     (fetchpatch {
       # https://bugzilla.mozilla.org/show_bug.cgi?id=1773259
       name = "rust-cbindgen-0.24.2-compat.patch";
diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index 31a65f235a43..1b71791b833c 100644
--- a/pkgs/applications/networking/browsers/firefox/packages.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -3,10 +3,10 @@
 rec {
   firefox = buildMozillaMach rec {
     pname = "firefox";
-    version = "102.0.1";
+    version = "103.0";
     src = fetchurl {
       url = "mirror://mozilla/firefox/releases/${version}/source/firefox-${version}.source.tar.xz";
-      sha512 = "a930d359fb81e473b963a93f6db5110871e9fd57f6d0f352513047d363d930dd4811e8dd786c2f6f3541c3871eb1c0169b718652d9ee076fd13a20f52af30417";
+      sha512 = "016c2f276fb94e5174626f7d8b1a821b2de0f5a07f8a10f00a7ea4d4285591b0c23dd3ef45306579de79b3dfa99ccc527224c33f3319f61cf088b1f4bd097f9e";
     };
 
     meta = {