diff --git a/pkgs/development/ocaml-modules/webmachine/default.nix b/pkgs/development/ocaml-modules/webmachine/default.nix
index c7ad92efe768..9f8749cac9fd 100644
--- a/pkgs/development/ocaml-modules/webmachine/default.nix
+++ b/pkgs/development/ocaml-modules/webmachine/default.nix
@@ -6,9 +6,9 @@
 buildDunePackage rec {
   pname = "webmachine";
   version = "0.7.0";
-  useDune2 = true;
+  duneVersion = "3";
 
-  minimumOCamlVersion = "4.04";
+  minimalOCamlVersion = "4.03";
 
   src = fetchFromGitHub {
     owner = "inhabitedtype";
@@ -24,7 +24,7 @@ buildDunePackage rec {
   doCheck = true;
 
   meta = {
-    inherit (src.meta) homepage;
+    homepage = "https://github.com/inhabitedtype/ocaml-webmachine";
     license = lib.licenses.bsd3;
     description = "A REST toolkit for OCaml";
     maintainers = [ lib.maintainers.vbgl ];