diff --git a/pkgs/development/ocaml-modules/io-page/unix.nix b/pkgs/development/ocaml-modules/io-page/unix.nix
new file mode 100644
index 00000000000..b3f7f878b27
--- /dev/null
+++ b/pkgs/development/ocaml-modules/io-page/unix.nix
@@ -0,0 +1,17 @@
+{ lib, buildDunePackage, io-page, cstruct, ounit }:
+
+buildDunePackage {
+  pname = "io-page-unix";
+
+  inherit (io-page) version src minimumOCamlVersion;
+
+  propagatedBuildInputs = [ cstruct io-page ];
+  checkInputs = [ ounit ];
+  doCheck = true;
+
+  meta = with lib; {
+    inherit (io-page.meta) homepage license;
+    description = "Support for efficient handling of I/O memory pages on Unix";
+    maintainers = [ maintainers.sternenseemann ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 710b6e37b1d..af8799da20b 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -320,6 +320,8 @@ let
 
     io-page = callPackage ../development/ocaml-modules/io-page { };
 
+    io-page-unix = callPackage ../development/ocaml-modules/io-page/unix.nix { };
+
     ipaddr = callPackage ../development/ocaml-modules/ipaddr { };
 
     irmin_1 = callPackage ../development/ocaml-modules/irmin/1.4.nix { };