diff --git a/overlays/nixpkgs/unstable.nix b/overlays/nixpkgs/unstable.nix
index b8ed692..7450370 100644
--- a/overlays/nixpkgs/unstable.nix
+++ b/overlays/nixpkgs/unstable.nix
@@ -1,6 +1,5 @@
 { inputs, ... }: final: prev: {
-  unstable = (inputs.nixpkgs-unstable.legacyPackages.${prev.system}).extend
-    (self: super: {
-      inherit (prev) config system overlays;
-    });
+  unstable = import inputs.nixpkgs-unstable {
+    inherit (prev) system config overlays;
+  };
 }