diff --git a/pkgs/by-name/ar/arkenfox-userjs/package.nix b/pkgs/by-name/ar/arkenfox-userjs/package.nix
new file mode 100644
index 000000000000..04ac83fce1a6
--- /dev/null
+++ b/pkgs/by-name/ar/arkenfox-userjs/package.nix
@@ -0,0 +1,41 @@
+{
+  lib,
+  fetchurl,
+  stdenvNoCC,
+  nix-update-script,
+}:
+stdenvNoCC.mkDerivation (finalAttrs: {
+  pname = "arkenfox-userjs";
+  version = "126.1";
+
+  src = fetchurl {
+    url = "https://raw.githubusercontent.com/arkenfox/user.js/${finalAttrs.version}/user.js";
+    hash = "sha256-XRtG0iLKh8uqbeX7Rc2H6VJwZYJoNZPBlAfZEfrSCP4=";
+  };
+
+  dontUnpack = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm644 $src $out/user.js
+    install -Dm644 $src $out/user.cfg
+    substituteInPlace $out/user.cfg \
+      --replace-fail "user_pref" "defaultPref"
+
+    runHook postInstall
+  '';
+
+  passthru.updateScript = nix-update-script { };
+
+  meta = {
+    description = "A comprehensive user.js template for configuration and hardening";
+    homepage = "https://github.com/arkenfox/user.js";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [
+      linsui
+      Guanran928
+    ];
+    platforms = lib.platforms.all;
+  };
+})