diff --git a/pkgs/development/ocaml-modules/randomconv/default.nix b/pkgs/development/ocaml-modules/randomconv/default.nix
new file mode 100644
index 00000000000..7abb153b9be
--- /dev/null
+++ b/pkgs/development/ocaml-modules/randomconv/default.nix
@@ -0,0 +1,21 @@
+{ lib, buildDunePackage, fetchurl, cstruct }:
+
+buildDunePackage rec {
+  pname = "randomconv";
+  version = "0.1.3";
+
+  src = fetchurl {
+    url = "https://github.com/hannesm/randomconv/releases/download/v${version}/randomconv-v${version}.tbz";
+    sha256 = "1iv3r0s5kqxs893b0d55f0r62k777haiahfkkvvfbqwgqsm6la4v";
+  };
+
+  propagatedBuildInputs = [ cstruct ];
+
+  meta = {
+    homepage = "https://github.com/hannesm/randomconv";
+    description = "Convert from random bytes to random native numbers";
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.vbgl ];
+  };
+
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index f3c7f4654f2..e513b8619e4 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -829,6 +829,8 @@ let
 
     qtest = callPackage ../development/ocaml-modules/qtest { };
 
+    randomconv = callPackage ../development/ocaml-modules/randomconv { };
+
     re = callPackage ../development/ocaml-modules/re { };
 
     react = callPackage ../development/ocaml-modules/react { };