diff --git a/pkgs/development/ocaml-modules/ocsigen-server/default.nix b/pkgs/development/ocaml-modules/ocsigen-server/default.nix
index 6097194d275..3ee300a5a96 100644
--- a/pkgs/development/ocaml-modules/ocsigen-server/default.nix
+++ b/pkgs/development/ocaml-modules/ocsigen-server/default.nix
@@ -20,7 +20,7 @@ buildDunePackage rec {
   version = "5.0.1";
   pname = "ocsigenserver";
 
-  useDune2 = true;
+  duneVersion = "3";
   minimalOCamlVersion = "4.08";
 
   src = fetchFromGitHub {