diff --git a/pkgs/development/ocaml-modules/mdx/default.nix b/pkgs/development/ocaml-modules/mdx/default.nix
index a22a4eab54f..dc8e2312e75 100644
--- a/pkgs/development/ocaml-modules/mdx/default.nix
+++ b/pkgs/development/ocaml-modules/mdx/default.nix
@@ -1,7 +1,9 @@
 { lib, fetchFromGitHub, buildDunePackage, ocaml
 , alcotest
 , astring, cmdliner, cppo, fmt, logs, ocaml-version, odoc-parser, ocaml_lwt, re, result, csexp
-, pandoc}:
+, pandoc
+, gitUpdater
+}:
 
 buildDunePackage rec {
   pname = "mdx";
@@ -32,6 +34,8 @@ buildDunePackage rec {
     runHook postInstall
   '';
 
+  passthru.updateScript = gitUpdater { };
+
   meta = {
     description = "Executable OCaml code blocks inside markdown files";
     homepage = "https://github.com/realworldocaml/mdx";