diff --git a/pkgs/development/ocaml-modules/pgocaml/default.nix b/pkgs/development/ocaml-modules/pgocaml/default.nix
index 5c00f2c8991..22ef94af92e 100644
--- a/pkgs/development/ocaml-modules/pgocaml/default.nix
+++ b/pkgs/development/ocaml-modules/pgocaml/default.nix
@@ -4,16 +4,16 @@
 
 buildDunePackage rec {
   pname = "pgocaml";
-  version = "4.2.2-dev-20210111";
+  version = "4.3.0";
   src = fetchFromGitHub {
     owner = "darioteixeira";
     repo = "pgocaml";
-    rev = "1bb0025deeb3d14029afdcc69aaa7847026e243e";
-    sha256 = "11inbjf87gclc2xmpq56ag4cm4467y9q9hjgbdn69fa1bman2zn2";
+    rev = version;
+    hash = "sha256-W1fbRnU1l61qqxfVY2qiBnVpGD81xrBO8k0tWr+RXMY=";
   };
 
-  minimumOCamlVersion = "4.08";
-  useDune2 = true;
+  minimalOCamlVersion = "4.08";
+  duneVersion = "3";
 
   propagatedBuildInputs = [ calendar csv hex ppx_deriving ppx_sexp_conv re rresult sexplib ];
 
diff --git a/pkgs/development/ocaml-modules/pgocaml/ppx.nix b/pkgs/development/ocaml-modules/pgocaml/ppx.nix
index dce2e2b0c99..b649f70d198 100644
--- a/pkgs/development/ocaml-modules/pgocaml/ppx.nix
+++ b/pkgs/development/ocaml-modules/pgocaml/ppx.nix
@@ -2,7 +2,10 @@
 
 buildDunePackage {
   pname = "pgocaml_ppx";
-  inherit (pgocaml) src version useDune2 meta;
+  inherit (pgocaml) src version meta;
 
-  propagatedBuildInputs = [ pgocaml ppx_optcomp ];
+  duneVersion = "3";
+
+  buildInputs = [ ppx_optcomp ];
+  propagatedBuildInputs = [ pgocaml ];
 }