diff --git a/pkgs/development/ocaml-modules/lo/default.nix b/pkgs/development/ocaml-modules/lo/default.nix
index 083de69b36cc7..dd2dc8d493283 100644
--- a/pkgs/development/ocaml-modules/lo/default.nix
+++ b/pkgs/development/ocaml-modules/lo/default.nix
@@ -1,5 +1,6 @@
 {
   lib,
+  fetchpatch,
   buildDunePackage,
   fetchFromGitHub,
   dune-configurator,
@@ -19,6 +20,13 @@ buildDunePackage rec {
     sha256 = "0mi8h6f6syxjkxz493l5c3l270pvxx33pz0k3v5465wqjsnppar2";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/savonet/ocaml-lo/commit/0b43bdf113c7e2c27d55c6a5f81f2fa4b30b5454.patch";
+      hash = "sha256-Y5xewkKgTX9WIpbmVA9uA6N7KOPPhNguTWvowgoAcNU=";
+    })
+  ];
+
   buildInputs = [ dune-configurator ];
   propagatedBuildInputs = [ liblo ];