diff --git a/pkgs/development/ocaml-modules/qtest/default.nix b/pkgs/development/ocaml-modules/qtest/default.nix
index e7f00803a19..d5829127a8b 100644
--- a/pkgs/development/ocaml-modules/qtest/default.nix
+++ b/pkgs/development/ocaml-modules/qtest/default.nix
@@ -4,6 +4,8 @@ buildDunePackage rec {
   pname = "qtest";
   version = "2.11.1";
 
+  useDune2 = true;
+
   src = fetchFromGitHub {
     owner = "vincent-hugot";
     repo = pname;