diff --git a/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix b/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix
index ee801f6adfd..1da8a55225c 100644
--- a/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix
@@ -9,8 +9,8 @@ buildDunePackage rec {
     sha256 = "sha256-/mMj5UT22KQGVy1sjgEoOgPzyCYyeDPtWJYNDvQ9nlk=";
   };
 
-  minimumOCamlVersion = "4.07";
-  useDune2 = true;
+  minimalOCamlVersion = "4.07";
+  duneVersion = "3";
 
   buildInputs = [ ppxlib ];