diff --git a/flake.nix b/flake.nix
index 961137fe..1e524b35 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,11 +21,8 @@
 
       overlay = import ./overlay;
 
-      legacyPackages = forAllSystems (system:
-        import nixpkgs {
-          inherit system;
-          overlays = [ self.overlay ];
-        });
+      legacyPackages = forAllSystems
+        (system: nixpkgs.legacyPackages.${system}.extend self.overlay);
 
       packages = forAllSystems (system:
         let