diff --git a/flake.nix b/flake.nix
index bb0524b..58e9977 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,11 +13,11 @@
 
     # forAllSystems = f: nixpkgs.lib.genAttrs defaultSystems (system: f system);
     forAllSystems = f:
-      nixpkgs.lib.mapAttrs (nixpkgs.lib.genAttrs defaultSystems (system:
+      nixpkgs.lib.genAttrs defaultSystems (system:
         f system (import nixpkgs {
           inherit system;
-          overlays = [self.overlay];
-        })));
+          overlays = builtins.attrValues self.overlays;
+        }));
   in {
     overlays.default = final: prev: {
       dorne = final.haskellPackages.developPackage {