diff --git a/default.nix b/default.nix
index ba86f41..6146444 100644
--- a/default.nix
+++ b/default.nix
@@ -21,7 +21,7 @@ let
      };
   };
 
-  nixpkgs = pkgs { overlays = [overlay]; };
+  nixpkgs = pkgs { overlays = [overlay]; config = {allowUnfree = true;};};
 in
 with nixpkgs;
 rec {