diff --git a/flake.nix b/flake.nix
index 97bfd6b..cc02145 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,8 +31,14 @@
       };
     };
 
+    overlays = system: pkgs: {
+      default = self.overlays.${system}.riotee;
+      riotee = final: prev: prev // (packages system pkgs);
+    };
+
   in {
     packages = builtins.mapAttrs packages nixpkgs.legacyPackages;
     devShells = builtins.mapAttrs devShells nixpkgs.legacyPackages;
+    overlays = builtins.mapAttrs overlays nixpkgs.legacyPackages;
   };
 }