diff --git a/pkgs/development/ocaml-modules/msgpck/default.nix b/pkgs/development/ocaml-modules/msgpck/default.nix
new file mode 100644
index 000000000000..2871e774f3fe
--- /dev/null
+++ b/pkgs/development/ocaml-modules/msgpck/default.nix
@@ -0,0 +1,31 @@
+{ lib
+, fetchFromGitHub
+, buildDunePackage
+, ocplib-endian
+, alcotest
+}:
+
+buildDunePackage rec {
+  pname = "msgpck";
+  version = "1.7";
+
+  src = fetchFromGitHub {
+    owner = "vbmithr";
+    repo = "ocaml-msgpck";
+    rev = "${version}";
+    hash = "sha256-gBHIiicmk/5KBkKzRKyV0ymEH8dGCZG8vfE0mtpcDCM=";
+  };
+
+  propagatedBuildInputs = [ ocplib-endian ];
+
+  checkInputs = [ alcotest ];
+
+  doCheck = true;
+
+  meta = {
+    description = "Fast MessagePack (http://msgpack.org) library ";
+    license = lib.licenses.isc;
+    homepage = "https://github.com/vbmithr/ocaml-msgpck";
+    maintainers = [ lib.maintainers.ulrikstrid ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index e6cbbec2da74..776fd6ae45b2 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1158,6 +1158,8 @@ let
 
     mparser-pcre =  callPackage ../development/ocaml-modules/mparser/pcre.nix { };
 
+    msgpck = callPackage ../development/ocaml-modules/msgpck { };
+
     mrmime = callPackage ../development/ocaml-modules/mrmime { };
 
     mtime_1 =  callPackage ../development/ocaml-modules/mtime/1_x.nix { };