diff --git a/pkgs/development/ocaml-modules/atd/default.nix b/pkgs/development/ocaml-modules/atd/default.nix
new file mode 100644
index 000000000000..c7f8bc3d10f7
--- /dev/null
+++ b/pkgs/development/ocaml-modules/atd/default.nix
@@ -0,0 +1,26 @@
+{stdenv, menhir, easy-format, buildOcaml, fetchurl, which}:
+
+buildOcaml rec {
+  name = "atd";
+  version = "1.1.2";
+
+  src = fetchurl {
+    url = "https://github.com/mjambon/atd/archive/v${version}.tar.gz";
+    sha256 = "0ef10c63192aed75e9a4274e89c5f9ca27efb1ef230d9949eda53ad4a9a37291";
+  };
+
+  installPhase = ''
+    mkdir -p $out/bin
+    make PREFIX=$out install
+  '';
+
+  buildInputs = [ which ];
+  propagatedBuildInputs = [ menhir easy-format ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/mjambon/atd;
+    description = "Syntax for cross-language type definitions";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.jwilberding ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 07c8c59d874b..59acd04a652a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4063,6 +4063,7 @@ let
 
     async = callPackage ../development/ocaml-modules/async { };
 
+    atd = callPackage ../development/ocaml-modules/atd { };
     base64 = callPackage ../development/ocaml-modules/base64 { };
 
     bolt = callPackage ../development/ocaml-modules/bolt { };