diff --git a/pkgs/development/ocaml-modules/mirage-bootvar-unix/default.nix b/pkgs/development/ocaml-modules/mirage-bootvar-unix/default.nix
new file mode 100644
index 000000000000..9b9a1ae185ec
--- /dev/null
+++ b/pkgs/development/ocaml-modules/mirage-bootvar-unix/default.nix
@@ -0,0 +1,22 @@
+{ lib, fetchurl, buildDunePackage
+, lwt, parse-argv
+}:
+
+buildDunePackage rec {
+  pname = "mirage-bootvar-unix";
+  version = "0.1.0";
+
+  src = fetchurl {
+    url = "https://github.com/mirage/mirage-bootvar-unix/releases/download/${version}/mirage-bootvar-unix-${version}.tbz";
+    sha256 = "0r92s6y7nxg0ci330a7p0hii4if51iq0sixn20cnm5j4a2clprbf";
+  };
+
+  propagatedBuildInputs = [ lwt parse-argv ];
+
+  meta = {
+    description = "Unix implementation of MirageOS Bootvar interface";
+    homepage = "https://github.com/mirage/mirage-bootvar-unix";
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.vbgl ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 715c1dc0a926..1508b7504e0c 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -539,6 +539,8 @@ let
 
     minisat = callPackage ../development/ocaml-modules/minisat { };
 
+    mirage-bootvar-unix = callPackage ../development/ocaml-modules/mirage-bootvar-unix { };
+
     mirage-clock = callPackage ../development/ocaml-modules/mirage-clock { };
 
     mirage-clock-unix = callPackage ../development/ocaml-modules/mirage-clock/unix.nix { };