diff --git a/pkgs/by-name/st/stalwart-mail/webadmin.nix b/pkgs/by-name/st/stalwart-mail/webadmin.nix
index 0dfa42cf5561..e11ef03b6534 100644
--- a/pkgs/by-name/st/stalwart-mail/webadmin.nix
+++ b/pkgs/by-name/st/stalwart-mail/webadmin.nix
@@ -5,6 +5,7 @@
   trunk-ng,
   tailwindcss,
   fetchNpmDeps,
+  nix-update-script,
   nodejs,
   npmHooks,
   llvmPackages,
@@ -60,6 +61,10 @@ rustPlatform.buildRustPackage rec {
     zip -r $out/webadmin.zip *
   '';
 
+  passthru = {
+    updateScript = nix-update-script { };
+  };
+
   meta = with lib; {
     description = "Secure & modern all-in-one mail server Stalwart (webadmin module)";
     homepage = "https://github.com/stalwartlabs/webadmin";