diff --git a/pkgs/development/ocaml-modules/mirage-vnetif/default.nix b/pkgs/development/ocaml-modules/mirage-vnetif/default.nix
index 22955018bde..94b5f39820f 100644
--- a/pkgs/development/ocaml-modules/mirage-vnetif/default.nix
+++ b/pkgs/development/ocaml-modules/mirage-vnetif/default.nix
@@ -9,10 +9,11 @@ buildDunePackage rec {
   version = "0.6.0";
 
   minimalOCamlVersion = "4.06";
+  duneVersion = "3";
 
   src = fetchurl {
     url = "https://github.com/mirage/${pname}/releases/download/v${version}/${pname}-${version}.tbz";
-    sha256 = "sha256-fzRoNFqdnj4Ke+eNdo5crvbnKDx6/+dQyu+K3rD5dYw=";
+    hash = "sha256-fzRoNFqdnj4Ke+eNdo5crvbnKDx6/+dQyu+K3rD5dYw=";
   };
 
   propagatedBuildInputs = [