diff --git a/pkgs/development/ocaml-modules/decompress/default.nix b/pkgs/development/ocaml-modules/decompress/default.nix
new file mode 100644
index 000000000000..389a136aae6b
--- /dev/null
+++ b/pkgs/development/ocaml-modules/decompress/default.nix
@@ -0,0 +1,30 @@
+{ stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, topkg, opam
+}:
+
+if !stdenv.lib.versionAtLeast ocaml.version "4.03"
+then throw "decompress is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+	version = "0.6";
+	name = "ocaml${ocaml.version}-decompress-${version}";
+
+	src = fetchFromGitHub {
+		owner = "mirage";
+		repo = "decompress";
+		rev = "v${version}";
+		sha256 = "0hfs5zrvimzvjwdg57vrxx9bb7irvlm07dk2yv3s5qhj30zimd08";
+	};
+
+	buildInputs = [ ocaml findlib ocamlbuild topkg opam ];
+
+	inherit (topkg) buildPhase installPhase;
+
+	meta = {
+		description = "Pure OCaml implementation of Zlib";
+		license = stdenv.lib.licenses.mit;
+		maintainers = [ stdenv.lib.maintainers.vbgl ];
+		inherit (src.meta) homepage;
+		inherit (ocaml.meta) platforms;
+	};
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 0194ca7c28f4..28e99df9f1ab 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -172,6 +172,8 @@ let
 
     ctypes = callPackage ../development/ocaml-modules/ctypes { };
 
+    decompress =  callPackage ../development/ocaml-modules/decompress { };
+
     dolmen =  callPackage ../development/ocaml-modules/dolmen { };
 
     dolog = callPackage ../development/ocaml-modules/dolog { };