1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/development/ocaml-modules/mirage-net-xen/default.nix b/pkgs/development/ocaml-modules/mirage-net-xen/default.nix
index 49a00747cfa..e03e17905fa 100644
--- a/pkgs/development/ocaml-modules/mirage-net-xen/default.nix
+++ b/pkgs/development/ocaml-modules/mirage-net-xen/default.nix
@@ -20,6 +20,8 @@ buildDunePackage {
     meta
     ;
 
+  duneVersion = "3";
+
   nativeBuildInputs = [
     ppx_sexp_conv
   ];