diff --git a/overlays/nixpak/firefox.nix b/overlays/nixpak/firefox.nix
index 2bca263..22d90eb 100644
--- a/overlays/nixpak/firefox.nix
+++ b/overlays/nixpak/firefox.nix
@@ -77,6 +77,20 @@
   in
     prev.wrapFirefox (sandboxed-firefox-esr.config.env // {
       gtk3 = prev.gtk3;
-      inherit (prev.firefox-esr) pname meta tests;
+      inherit (prev.firefox-esr)
+        pname
+        meta
+        tests
+        version
+        langPath
+        updateScript
+        pkgconfig
+        buildPackages
+        patches
+        extraPatches
+        extraPrefs
+        extraPolicies
+        nativeMessagingHosts
+        cfg;
     });
 }