diff --git a/pkgs/by-name/li/linux-firmware/package.nix b/pkgs/by-name/li/linux-firmware/package.nix
index fcbde7a8795f0..a95b8ada1e350 100644
--- a/pkgs/by-name/li/linux-firmware/package.nix
+++ b/pkgs/by-name/li/linux-firmware/package.nix
@@ -20,15 +20,15 @@ let
     fi
   '';
 in
-stdenvNoCC.mkDerivation rec {
+stdenvNoCC.mkDerivation {
   pname = "linux-firmware";
-  version = "20251125";
+  version = "20251125-unstable-2025-12-18";
 
   src = fetchFromGitLab {
     owner = "kernel-firmware";
     repo = "linux-firmware";
-    tag = version;
-    hash = "sha256-eNzCgVx6iPWbPccMM1TLBIsFKwiha9/gajmFtobj4SE=";
+    rev = "881c549a82203abd9a88870ba27f3e8ce754b2c4";
+    hash = "sha256-ziKzNbP8pqwFilzQb227FtVMqaUGDcbZ57tc9mAMSxs=";
   };
 
   postUnpack = ''