diff --git a/pkgs/development/ocaml-modules/httpun/eio.nix b/pkgs/development/ocaml-modules/httpun/eio.nix
new file mode 100644
index 000000000000..1b3160d699f1
--- /dev/null
+++ b/pkgs/development/ocaml-modules/httpun/eio.nix
@@ -0,0 +1,16 @@
+{ buildDunePackage
+, httpun
+, gluten-eio
+}:
+
+buildDunePackage {
+  pname = "httpun-eio";
+
+  inherit (httpun) src version;
+
+  propagatedBuildInputs = [ gluten-eio httpun ];
+
+  meta = httpun.meta // {
+    description = "EIO support for httpun";
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index c3c71efa41e0..4f98f1ff6963 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -693,6 +693,8 @@ let
 
     httpun = callPackage ../development/ocaml-modules/httpun { };
 
+    httpun-eio = callPackage ../development/ocaml-modules/httpun/eio.nix { };
+
     httpun-types = callPackage ../development/ocaml-modules/httpun/types.nix { };
 
     hxd = callPackage ../development/ocaml-modules/hxd { };