diff --git a/pkgs/development/ocaml-modules/phylogenetics/default.nix b/pkgs/development/ocaml-modules/phylogenetics/default.nix
index e67429a6a45..d41e7c16ce1 100644
--- a/pkgs/development/ocaml-modules/phylogenetics/default.nix
+++ b/pkgs/development/ocaml-modules/phylogenetics/default.nix
@@ -26,6 +26,7 @@ buildDunePackage rec {
   };
 
   minimalOCamlVersion = "4.08";
+  duneVersion = "3";
 
   nativeCheckInputs = [ bppsuite ];
   checkInputs = [ alcotest ];