diff --git a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
index dbfa05744e5..3610cded1c9 100644
--- a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
@@ -6,13 +6,13 @@ else
 
 stdenv.mkDerivation rec {
    name = "ocaml${ocaml.version}-ocaml-migrate-parsetree-${version}";
-   version = "1.0";
+   version = "1.0.4";
 
    src = fetchFromGitHub {
      owner = "let-def";
      repo = "ocaml-migrate-parsetree";
      rev = "v${version}";
-     sha256 = "0j1d3scakny2b656gyz5z2h8987b5aqw7iwssxgfbhwcszn6sps4";
+     sha256 = "0xwjll827anqngnqy746m2pd44mkhsaaqaqbir6z91xcqix2isvy";
    };
 
    buildInputs = [ ocaml findlib ocamlbuild jbuilder ];