diff --git a/pkgs/applications/science/logic/acgtk/default.nix b/pkgs/applications/science/logic/acgtk/default.nix
index c627b8a3c8f5..693bc306f21e 100644
--- a/pkgs/applications/science/logic/acgtk/default.nix
+++ b/pkgs/applications/science/logic/acgtk/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitLab, dune_2, ocamlPackages }:
+{ lib, stdenv, fetchFromGitLab, dune_3, ocamlPackages }:
 
 stdenv.mkDerivation {
 
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
 
   strictDeps = true;
 
-  nativeBuildInputs = with ocamlPackages; [ menhir ocaml findlib dune_2 ];
+  nativeBuildInputs = with ocamlPackages; [ menhir ocaml findlib dune_3 ];
 
   buildInputs = with ocamlPackages; [
     ansiterminal cairo2 cmdliner fmt logs menhirLib mtime sedlex yojson
diff --git a/pkgs/development/ocaml-modules/gen/default.nix b/pkgs/development/ocaml-modules/gen/default.nix
index ee932bffd5e6..86dbc61f6faf 100644
--- a/pkgs/development/ocaml-modules/gen/default.nix
+++ b/pkgs/development/ocaml-modules/gen/default.nix
@@ -1,22 +1,21 @@
 { lib, buildDunePackage, fetchFromGitHub, ocaml
-, dune-configurator
 , seq
 , qcheck, ounit2
 }:
 
 buildDunePackage rec {
-  version = "1.0";
+  version = "1.1";
   pname = "gen";
   minimalOCamlVersion = "4.03";
+  duneVersion = "3";
 
   src = fetchFromGitHub {
     owner = "c-cube";
     repo = "gen";
     rev = "v${version}";
-    hash = "sha256-YWoVcl2TQoMIgU1LoKL16ia31zJjwAMwuphtSXnhtvw=";
+    hash = "sha256-ZytPPGhmt/uANaSgkgsUBOwyQ9ka5H4J+5CnJpEdrNk=";
   };
 
-  buildInputs = [ dune-configurator ];
   propagatedBuildInputs = [ seq ];
   checkInputs = [ qcheck ounit2 ];
 
diff --git a/pkgs/development/ocaml-modules/higlo/default.nix b/pkgs/development/ocaml-modules/higlo/default.nix
index 87a4186a68c3..da843fe15112 100644
--- a/pkgs/development/ocaml-modules/higlo/default.nix
+++ b/pkgs/development/ocaml-modules/higlo/default.nix
@@ -3,7 +3,7 @@
 buildDunePackage rec {
   pname = "higlo";
   version = "0.8";
-  useDune2 = true;
+  duneVersion = "3";
   src = fetchFromGitLab {
     domain = "framagit.org";
     owner = "zoggy";
diff --git a/pkgs/development/ocaml-modules/iri/default.nix b/pkgs/development/ocaml-modules/iri/default.nix
index 22f106975868..0ea05cb7b9ba 100644
--- a/pkgs/development/ocaml-modules/iri/default.nix
+++ b/pkgs/development/ocaml-modules/iri/default.nix
@@ -5,7 +5,7 @@
 buildDunePackage rec {
   pname = "iri";
   version = "0.6.0";
-  useDune2 = true;
+  duneVersion = "3";
 
   src = fetchFromGitLab {
     domain = "framagit.org";
diff --git a/pkgs/development/ocaml-modules/sedlex/default.nix b/pkgs/development/ocaml-modules/sedlex/default.nix
index 27756fdcd26e..0ce962417ed7 100644
--- a/pkgs/development/ocaml-modules/sedlex/default.nix
+++ b/pkgs/development/ocaml-modules/sedlex/default.nix
@@ -47,6 +47,7 @@ buildDunePackage rec {
   inherit (param) version;
 
   minimalOCamlVersion = "4.08";
+  duneVersion = "3";
 
   src = fetchFromGitHub {
     owner = "ocaml-community";
diff --git a/pkgs/development/ocaml-modules/xtmpl/default.nix b/pkgs/development/ocaml-modules/xtmpl/default.nix
index 6b4771fe1ff4..47e153e53c2d 100644
--- a/pkgs/development/ocaml-modules/xtmpl/default.nix
+++ b/pkgs/development/ocaml-modules/xtmpl/default.nix
@@ -3,7 +3,7 @@
 buildDunePackage rec {
   pname = "xtmpl";
   version = "0.19.0";
-  useDune2 = true;
+  duneVersion = "3";
   src = fetchFromGitLab {
     domain = "framagit.org";
     owner = "zoggy";
diff --git a/pkgs/development/ocaml-modules/xtmpl/ppx.nix b/pkgs/development/ocaml-modules/xtmpl/ppx.nix
index b6f5bd65000f..0e23cdc48f70 100644
--- a/pkgs/development/ocaml-modules/xtmpl/ppx.nix
+++ b/pkgs/development/ocaml-modules/xtmpl/ppx.nix
@@ -3,8 +3,9 @@
 buildDunePackage {
   pname = "xtmpl_ppx";
   minimalOCamlVersion = "4.11";
+  duneVersion = "3";
 
-  inherit (xtmpl) src version useDune2;
+  inherit (xtmpl) src version;
 
   buildInputs = [ ppxlib xtmpl ];