diff --git a/pkgs/development/ocaml-modules/uutf/default.nix b/pkgs/development/ocaml-modules/uutf/default.nix
index a08e0ccbf74e..feb197defc32 100644
--- a/pkgs/development/ocaml-modules/uutf/default.nix
+++ b/pkgs/development/ocaml-modules/uutf/default.nix
@@ -1,37 +1,26 @@
-{ stdenv, buildOcaml, fetchurl, ocaml, findlib, ocamlbuild, opam, cmdliner}:
+{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, opam, cmdliner , topkg, uchar }:
 let
   pname = "uutf";
   webpage = "http://erratique.ch/software/${pname}";
 in
 
-buildOcaml rec {
-  name = pname;
-  version = "0.9.4";
-
-  minimumSupportedOcamlVersion = "4.00.0";
+stdenv.mkDerivation rec {
+  name = "ocaml${ocaml.version}-${pname}-${version}";
+  version = "1.0.0";
 
   src = fetchurl {
     url = "${webpage}/releases/${pname}-${version}.tbz";
-    sha256 = "1f71fyawxal42x6g82539bv0ava2smlar6rmxxz1cyq3l0i6fw0k";
+    sha256 = "08i0cw02cxw4mi2rs01v9xi307qshs6fnd1dlqyb52kcxzblpp37";
   };
 
-  buildInputs = [ ocaml findlib ocamlbuild opam cmdliner ];
+  buildInputs = [ ocaml findlib ocamlbuild topkg opam cmdliner ];
+  propagatedBuildInputs = [ uchar ];
 
   createFindlibDestdir = true;
 
   unpackCmd = "tar xjf $src";
 
-  buildPhase = ''
-    ocaml pkg/build.ml \
-      native=true \
-      native-dynlink=true \
-      cmdliner=true
-  '';
-
-  installPhase = ''
-    opam-installer --prefix=$out --script ${pname}.install | sh
-    ln -s $out/lib/uutf $out/lib/ocaml/${ocaml.version}/site-lib/
-  '';
+  inherit (topkg) buildPhase installPhase;
 
   meta = with stdenv.lib; {
     description = "Non-blocking streaming Unicode codec for OCaml";