diff --git a/pkgs/development/ocaml-modules/conduit/async.nix b/pkgs/development/ocaml-modules/conduit/async.nix
new file mode 100644
index 00000000000..1c5834c415a
--- /dev/null
+++ b/pkgs/development/ocaml-modules/conduit/async.nix
@@ -0,0 +1,18 @@
+{ stdenv, buildDunePackage, async, ppx_sexp_conv, conduit }:
+
+if !stdenv.lib.versionAtLeast conduit.version "1.0"
+then conduit
+else
+
+buildDunePackage {
+	pname = "conduit-async";
+	inherit (conduit) version src;
+
+	buildInputs = [ ppx_sexp_conv ];
+
+	propagatedBuildInputs = [ async conduit ];
+
+	meta = conduit.meta // {
+		description = "A network connection establishment library for Async";
+	};
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index c06ce3eeae2..d9937829b93 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -143,6 +143,8 @@ let
 
     conduit = callPackage ../development/ocaml-modules/conduit { };
 
+    conduit-async = callPackage ../development/ocaml-modules/conduit/async.nix { };
+
     conduit-lwt = callPackage ../development/ocaml-modules/conduit/lwt.nix { };
 
     conduit-lwt-unix = callPackage ../development/ocaml-modules/conduit/lwt-unix.nix { };