diff --git a/pkgs/development/ocaml-modules/reason-native/default.nix b/pkgs/development/ocaml-modules/reason-native/default.nix
index d54a1fd1322..024783cf618 100644
--- a/pkgs/development/ocaml-modules/reason-native/default.nix
+++ b/pkgs/development/ocaml-modules/reason-native/default.nix
@@ -1,23 +1,23 @@
-{ newScope, lib, fetchFromGitHub, callPackage, buildDunePackage, atdgen, junit, qcheck-core, re, reason, reason-native }:
+{ newScope, lib, fetchFromGitHub, callPackage, buildDunePackage, atdgen, junit, qcheck-core, re, reason, reason-native, fetchpatch }:
 
 let
   generic = (somePath:
     let
       prepkg = import somePath {
-        inherit callPackage cli buildDunePackage atdgen junit qcheck-core re reason;
+        inherit callPackage cli buildDunePackage atdgen junit qcheck-core re reason fetchpatch;
         inherit (reason-native) console file-context-printer fp pastel rely;
       };
     in
       buildDunePackage
         ({
-          version = "2021-16-16-aec0ac6";
+          version = "2022-08-31-a0ddab6";
           src = fetchFromGitHub {
             owner = "reasonml";
             repo = "reason-native";
-            rev = "aec0ac681be7211b4d092262281689c46deb63e1";
-            sha256 = "sha256-QoyI50MBY3RJBmM1y90n7oXrLmHe0CQxKojv+7YbegE=";
+            rev = "a0ddab6ab25237961e32d8732b0a222ec2372d4a";
+            hash = "sha256-s2N5OFTwIbKXcv05gQRaBMCHO1Mj563yhryPeo8jMh8=";
           };
-          useDune2 = true;
+          duneVersion = "3";
           meta = with lib; {
             description = "Libraries for building and testing native Reason programs";
             downloadPage = "https://github.com/reasonml/reason-native";
@@ -36,6 +36,7 @@ in
     fp = generic ./fp.nix;
     pastel = generic ./pastel.nix;
     pastel-console = generic ./pastel-console.nix;
+    qcheck-rely = generic ./qcheck-rely.nix;
     refmterr = generic ./refmterr.nix;
     rely = generic ./rely.nix;
     rely-junit-reporter = generic ./rely-junit-reporter.nix;
diff --git a/pkgs/development/ocaml-modules/reason-native/qcheck-rely.nix b/pkgs/development/ocaml-modules/reason-native/qcheck-rely.nix
new file mode 100644
index 00000000000..9d2770def09
--- /dev/null
+++ b/pkgs/development/ocaml-modules/reason-native/qcheck-rely.nix
@@ -0,0 +1,31 @@
+{ qcheck-core, reason, console, rely, fetchpatch, ... }:
+
+{
+  pname = "qcheck-rely";
+
+  nativeBuildInputs = [
+    reason
+  ];
+
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/reasonml/reason-native/pull/269/commits/b42d66f5929a11739c13f849939007bf8610888b.patch";
+      hash = "sha256-MMLl3eqF8xQZ2T+sIEuv2WpnGF6FZtatgH5fiF5hpP4=";
+      includes = [
+        "src/qcheck-rely/QCheckRely.re"
+        "src/qcheck-rely/QCheckRely.rei"
+      ];
+    })
+  ];
+
+  propagatedBuildInputs = [
+    qcheck-core
+    console
+    rely
+  ];
+
+  meta = {
+    description = "A library containing custom Rely matchers allowing for easily using QCheck with Rely. QCheck is a 'QuickCheck inspired property-based testing for OCaml, and combinators to generate random values to run tests on'";
+    downloadPage = "https://github.com/reasonml/reason-native/tree/master/src/qcheck-rely";
+  };
+}
diff --git a/pkgs/development/ocaml-modules/reason-native/tests/console/default.nix b/pkgs/development/ocaml-modules/reason-native/tests/console/default.nix
index e1a995d33c5..fc7f1891339 100644
--- a/pkgs/development/ocaml-modules/reason-native/tests/console/default.nix
+++ b/pkgs/development/ocaml-modules/reason-native/tests/console/default.nix
@@ -6,7 +6,7 @@ buildDunePackage rec {
 
   src = ./.;
 
-  useDune2 = true;
+  duneVersion = "3";
 
   buildInputs = [
     reason