diff --git a/pkgs/development/ocaml-modules/uri/default.nix b/pkgs/development/ocaml-modules/uri/default.nix
index f669a98c4de..2c7ab1b6e50 100644
--- a/pkgs/development/ocaml-modules/uri/default.nix
+++ b/pkgs/development/ocaml-modules/uri/default.nix
@@ -3,11 +3,11 @@
 }:
 
 buildDunePackage rec {
-  minimumOCamlVersion = "4.03";
+  minimalOCamlVersion = "4.03";
   pname = "uri";
   version = "4.2.0";
 
-  useDune2 = true;
+  duneVersion = "3";
 
   src = fetchurl {
     url = "https://github.com/mirage/ocaml-${pname}/releases/download/v${version}/${pname}-v${version}.tbz";
diff --git a/pkgs/development/ocaml-modules/uri/sexp.nix b/pkgs/development/ocaml-modules/uri/sexp.nix
index ba970b1d6c5..61aa01fad8b 100644
--- a/pkgs/development/ocaml-modules/uri/sexp.nix
+++ b/pkgs/development/ocaml-modules/uri/sexp.nix
@@ -6,7 +6,9 @@ else
 
 buildDunePackage {
   pname = "uri-sexp";
-  inherit (uri) version useDune2 src meta;
+  inherit (uri) version src meta;
+
+  duneVersion = "3";
 
   checkInputs = [ ounit ];
   propagatedBuildInputs = [ ppx_sexp_conv sexplib0 uri ];