diff --git a/pkgs/by-name/co/corto/package.nix b/pkgs/by-name/co/corto/package.nix
index 5efe16c864c4..55b96cdc8373 100644
--- a/pkgs/by-name/co/corto/package.nix
+++ b/pkgs/by-name/co/corto/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake ];
 
-  updateScript = nix-update-script { };
+  passthru.updateScript = nix-update-script { };
 
   meta = {
     description = "Mesh compression library, designed for rendering and speed";