diff --git a/pkgs/development/ocaml-modules/lens/default.nix b/pkgs/development/ocaml-modules/lens/default.nix
index c9cd5572bc7..0de5773a597 100644
--- a/pkgs/development/ocaml-modules/lens/default.nix
+++ b/pkgs/development/ocaml-modules/lens/default.nix
@@ -4,7 +4,7 @@ buildDunePackage rec {
   pname = "lens";
   version = "1.2.5";
 
-  useDune2 = true;
+  duneVersion = "3";
 
   src = fetchFromGitHub {
     owner = "pdonadeo";