diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 568e594..e4892b3 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -17,6 +17,9 @@
 	  allowedUDPPorts = [ 30000 ];
   };
 
+  # Allow Unfree
+  allowUnfree = true;
+
   # Keychain
   services.gnome.gnome-keyring.enable = true;
   programs.seahorse.enable = true;
@@ -100,9 +103,6 @@
 
   # List packages installed in system profile. To search, run:
   # $ nix search wget
-  allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
-             "dwarf-fortress"
-];
   environment.systemPackages = with pkgs; [
     neovim 
     wget
@@ -118,6 +118,7 @@
     gcc
     pkg-config
     nfs-utils
+    dwarf-fortress
   ];
 
   fonts.packages = with pkgs; [