diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index c5ee95a8bf1d..55d6a5295439 100644
--- a/pkgs/applications/networking/browsers/firefox/packages.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -5,10 +5,10 @@
 {
   firefox = buildMozillaMach rec {
     pname = "firefox";
-    version = "127.0.2";
+    version = "128.0";
     src = fetchurl {
       url = "mirror://mozilla/firefox/releases/${version}/source/firefox-${version}.source.tar.xz";
-      sha512 = "d5a959a032309b8a42690b7f5afd5110c2e6ca7de426e1529d50f59cf065e67623ed98bf3aab39ce4d345ccfad2a273b24ce4f87c7ba7e6eccf2e9dfe3008d8b";
+      sha512 = "309c0e2a0bea5699e6daf4fa02300ad7fd118d2c02c35cb5fa97a5fcc6e250cc7aec34e50fe872b8fd516436bfcfe37ddf33c9d0f9291860388cd6f3f08ea9f1";
     };
 
     extraPatches = [