diff --git a/pkgs/development/ocaml-modules/typerep/default.nix b/pkgs/development/ocaml-modules/typerep/default.nix
new file mode 100644
index 000000000000..9500579e2458
--- /dev/null
+++ b/pkgs/development/ocaml-modules/typerep/default.nix
@@ -0,0 +1,23 @@
+{stdenv, buildOcaml, fetchurl, type_conv}:
+
+buildOcaml rec {
+  name = "typerep";
+  version = "112.24.00";
+
+  minimumSupportedOcamlVersion = "4.00";
+
+  src = fetchurl {
+    url = "https://github.com/janestreet/typerep/archive/${version}.tar.gz";
+    sha256 = "4f1ab611a00aaf774e9774b26b687233e0c70d91f684415a876f094a9969eada";
+  };
+
+  propagatedBuildInputs = [ type_conv ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/janestreet/typerep;
+    description = "Runtime types for OCaml (beta version)";
+    license = licenses.asl20;
+    maintainers = [ maintainers.ericbmerritt ];
+  };
+
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1735b1d79397..6f3b1781d787 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4355,6 +4355,8 @@ let
 
     twt = callPackage ../development/ocaml-modules/twt { };
 
+    typerep = callPackage ../development/ocaml-modules/typerep { };
+
     utop = callPackage ../development/tools/ocaml/utop { };
 
     sawja = callPackage ../development/ocaml-modules/sawja { };