diff --git a/pkgs/development/ocaml-modules/hpack/default.nix b/pkgs/development/ocaml-modules/hpack/default.nix
new file mode 100644
index 00000000000..ec967312b87
--- /dev/null
+++ b/pkgs/development/ocaml-modules/hpack/default.nix
@@ -0,0 +1,37 @@
+{ buildDunePackage
+, lib
+, fetchurl
+, angstrom
+, faraday
+}:
+
+buildDunePackage rec {
+  pname = "hpack";
+  version = "0.8.0";
+
+  src = fetchurl {
+    url = "https://github.com/anmonteiro/ocaml-h2/releases/download/${version}/h2-${version}.tbz";
+    sha256 = "0qcn3yvyz0h419fjg9nb20csfmwmh3ihz0zb0jfzdycf5w4mlry6";
+  };
+
+  useDune2 = true;
+  minimumOCamlVersion = "4.04";
+
+  propagatedBuildInputs = [
+    angstrom
+    faraday
+  ];
+
+  # circular dependency
+  doCheck = false;
+
+  meta = {
+    license = lib.licenses.bsd3;
+    description = "An HPACK (Header Compression for HTTP/2) implementation in OCaml";
+    homepage = "https://github.com/anmonteiro/ocaml-h2";
+    maintainers = with lib.maintainers; [
+      sternenseemann
+      anmonteiro
+    ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index c7891a1821e..30ebf6680bb 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -413,6 +413,8 @@ let
 
     hmap = callPackage ../development/ocaml-modules/hmap { };
 
+    hpack = callPackage ../development/ocaml-modules/hpack { };
+
     hxd = callPackage ../development/ocaml-modules/hxd { };
 
     imagelib = callPackage ../development/ocaml-modules/imagelib { };