diff --git a/pkgs/development/ocaml-modules/optint/default.nix b/pkgs/development/ocaml-modules/optint/default.nix
index 2227f6e033c..06729bb8799 100644
--- a/pkgs/development/ocaml-modules/optint/default.nix
+++ b/pkgs/development/ocaml-modules/optint/default.nix
@@ -1,16 +1,14 @@
 { lib, buildDunePackage, fetchurl }:
 
 buildDunePackage rec {
-  minimumOCamlVersion = "4.07";
-  version = "0.1.0";
+  minimalOCamlVersion = "4.07";
+  version = "0.2.0";
   pname = "optint";
   src = fetchurl {
-    url = "https://github.com/mirage/optint/releases/download/v${version}/optint-v${version}.tbz";
-    sha256 = "27847660223c16cc7eaf8fcd9d5589a0b802114330a2529578f8007d3b01185d";
+    url = "https://github.com/mirage/optint/releases/download/v${version}/optint-${version}.tbz";
+    sha256 = "sha256-HcvgtrYDH3fbMwKMhxOP2zv5D5KRXjtmKd3rMKDTAAs=";
   };
 
-  useDune2 = true;
-
   meta = {
     homepage = "https://github.com/mirage/optint";
     description = "Abstract type of integer between x64 and x86 architecture";