diff --git a/pkgs/development/ocaml-modules/qtest/default.nix b/pkgs/development/ocaml-modules/qtest/default.nix
index 5e9a89a8376..ea0237201dc 100644
--- a/pkgs/development/ocaml-modules/qtest/default.nix
+++ b/pkgs/development/ocaml-modules/qtest/default.nix
@@ -4,7 +4,7 @@ buildDunePackage rec {
   pname = "qtest";
   version = "2.11.2";
 
-  useDune2 = true;
+  duneVersion = "3";
 
   src = fetchFromGitHub {
     owner = "vincent-hugot";