diff --git a/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix b/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix
index a5531813c42f..01c98b7f7625 100644
--- a/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_gen_rec/default.nix
@@ -4,7 +4,7 @@ buildDunePackage rec {
   pname = "ppx_gen_rec";
   version = "1.1.0";
 
-  minimumOCamlVersion = "4.01";
+  useDune2 = true;
 
   src = fetchurl {
     url = "https://github.com/flowtype/ocaml-${pname}/releases/download/v${version}/${pname}-v${version}.tbz";