diff --git a/flake.nix b/flake.nix
index bbf5101..08bd9a0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,6 +7,7 @@
     let
       exports = {
         nixosModules.age = import ./modules/age.nix;
+        overlay = import ./overlay.nix;
       };
       outputs = flake-utils.lib.eachDefaultSystem (system: {
         packages = nixpkgs.legacyPackages.${system}.callPackage ./default.nix { };
diff --git a/overlay.nix b/overlay.nix
new file mode 100644
index 0000000..de0e8a6
--- /dev/null
+++ b/overlay.nix
@@ -0,0 +1,4 @@
+final: prev:
+{
+  agenix = prev.callPackage ./pkgs/agenix.nix { };
+}