diff --git a/pkgs/development/ocaml-modules/bigstring/default.nix b/pkgs/development/ocaml-modules/bigstring/default.nix
index f966e0b90b1b..650522363d31 100644
--- a/pkgs/development/ocaml-modules/bigstring/default.nix
+++ b/pkgs/development/ocaml-modules/bigstring/default.nix
@@ -1,12 +1,16 @@
-{ lib, fetchFromGitHub, buildDunePackage }:
+{ lib, fetchFromGitHub, buildDunePackage, ocaml }:
 
 buildDunePackage rec {
   pname = "bigstring";
   version = "0.3";
 
-  useDune2 = true;
+  duneVersion = "3";
+  minimalOCamlVersion = "4.03";
 
-  minimumOCamlVersion = "4.03";
+  # Ensure compatibility with OCaml ≥ 5.0
+  preConfigure = lib.optional (lib.versionAtLeast ocaml.version "4.08") ''
+    substituteInPlace src/dune --replace '(libraries bytes bigarray)' ""
+  '';
 
   src = fetchFromGitHub {
     owner = "c-cube";
diff --git a/pkgs/development/ocaml-modules/hidapi/default.nix b/pkgs/development/ocaml-modules/hidapi/default.nix
index 68fc506222de..b47c153a4974 100644
--- a/pkgs/development/ocaml-modules/hidapi/default.nix
+++ b/pkgs/development/ocaml-modules/hidapi/default.nix
@@ -1,19 +1,21 @@
-{ pkgs, lib, fetchurl, buildDunePackage, pkg-config, dune-configurator
+{ pkgs, lib, fetchFromGitHub, buildDunePackage, pkg-config, dune-configurator
 , bigstring,
 }:
 
 buildDunePackage rec {
   pname = "hidapi";
-  version = "1.1.1";
+  version = "1.1.2";
 
-  useDune2 = true;
+  duneVersion = "3";
 
-  src = fetchurl {
-    url = "https://github.com/vbmithr/ocaml-hidapi/releases/download/${version}/${pname}-${version}.tbz";
-    sha256 = "1j7rd7ajrzla76r3sxljx6fb18f4f4s3jd7vhv59l2ilxyxycai2";
+  src = fetchFromGitHub {
+    owner = "vbmithr";
+    repo = "ocaml-hidapi";
+    rev = version;
+    hash = "sha256-SNQ1/i5wJJgcslIUBe+z5QgHns/waHnILyMUJ46cUwg=";
   };
 
-  minimumOCamlVersion = "4.03";
+  minimalOCamlVersion = "4.03";
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ pkgs.hidapi dune-configurator ];
diff --git a/pkgs/development/ocaml-modules/secp256k1-internal/default.nix b/pkgs/development/ocaml-modules/secp256k1-internal/default.nix
index 4a9a761ab30c..b403b997027b 100644
--- a/pkgs/development/ocaml-modules/secp256k1-internal/default.nix
+++ b/pkgs/development/ocaml-modules/secp256k1-internal/default.nix
@@ -11,15 +11,16 @@
 
 buildDunePackage rec {
   pname = "secp256k1-internal";
-  version = "0.3";
+  version = "0.4";
   src = fetchFromGitLab {
     owner = "nomadic-labs";
     repo = "ocaml-secp256k1-internal";
-    rev = version;
-    sha256 = "sha256-1wvQ4RW7avcGsIc0qgDzhGrwOBY0KHrtNVHCj2cgNzo=";
+    rev = "v${version}";
+    hash = "sha256-amVtp94cE1NxClWJgcJvRmilnQlC7z44mORUaxvPn00=";
   };
 
   minimalOCamlVersion = "4.08";
+  duneVersion = "3";
 
   propagatedBuildInputs = [
     gmp
diff --git a/pkgs/development/ocaml-modules/uecc/default.nix b/pkgs/development/ocaml-modules/uecc/default.nix
index efb86d862476..1185977132dd 100644
--- a/pkgs/development/ocaml-modules/uecc/default.nix
+++ b/pkgs/development/ocaml-modules/uecc/default.nix
@@ -4,6 +4,8 @@ buildDunePackage rec {
   pname = "uecc";
   version = "0.4";
 
+  duneVersion = "3";
+
   src = fetchFromGitLab {
     owner = "nomadic-labs";
     repo = "ocaml-uecc";