1 files changed, 2 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/ocaml-modules/opam-core/default.nix b/nixpkgs/pkgs/development/ocaml-modules/opam-core/default.nix
index 22c1ecdf7032..3106fe83fd70 100644
--- a/nixpkgs/pkgs/development/ocaml-modules/opam-core/default.nix
+++ b/nixpkgs/pkgs/development/ocaml-modules/opam-core/default.nix
@@ -6,6 +6,8 @@ buildDunePackage rec {
 
   inherit (opam) src version;
 
+  useDune2 = true;
+
   nativeBuildInputs = [ unzip cppo ];
   propagatedBuildInputs = [ ocamlgraph re ];