diff --git a/overlays/nixpkgs/unstable.nix b/overlays/nixpkgs/unstable.nix
index 13a7540..929416e 100644
--- a/overlays/nixpkgs/unstable.nix
+++ b/overlays/nixpkgs/unstable.nix
@@ -1,3 +1,5 @@
 { inputs, ... }: final: prev: {
-  unstable = inputs.nixpkgs-unstable.legacyPackages.${prev.system};
+  unstable = inputs.nixpkgs-unstable {
+    inherit (prev) system config overlays;
+  };
 }