diff --git a/overlays/nixpak/firefox.nix b/overlays/nixpak/firefox.nix
index 6141712..b3448d3 100644
--- a/overlays/nixpak/firefox.nix
+++ b/overlays/nixpak/firefox.nix
@@ -75,15 +75,13 @@
       };
     };
   in
-    sandboxed-firefox-esr.config.env.overrideAttrs (old: {
-      passthru = (old.passthru or {}) // {
-        browserName = "firefox";
-        enableOfficialBranding = true;
-        override = args: sandboxed-firefox-esr.config.env.override (old: {
-            extraPrefsFiles = args.extraPrefsFiles or old.extraPrefsFiles or [];
-            nativeMessagingHosts = args.nativeMessagingHosts or old.nativeMessagingHosts or [];
-            inherit (args) cfg;
-        });
+    prev.wrapFirefox sandboxed-firefox-esr.config.env {
+      browserName = "firefox";
+      pname = "firefox-esr-sandboxed";
+      desktopName = "Firefox ESR (Sandboxed)";
+
+      extraPolicies = {
+        DisableAppUpdate = true;
       };
-    });
+    };
 }