diff --git a/hosts/configuration_desktop.nix b/hosts/configuration_desktop.nix
index 2745847..f76d6cc 100644
--- a/hosts/configuration_desktop.nix
+++ b/hosts/configuration_desktop.nix
@@ -178,11 +178,8 @@
       options = "--delete-older-than 7d";
     };
     package = pkgs.nixVersions.stable;               # Enable nixFlakes on system
-    registry.nixpkgs.flake = inputs.nixpkgs;
     extraOptions = ''
       experimental-features = nix-command flakes
-      keep-outputs          = true
-      keep-derivations      = true
     '';
   };
   nixpkgs.config.allowUnfree = true;        # Allow proprietary software.
diff --git a/hosts/configuration_server.nix b/hosts/configuration_server.nix
index ad9db87..0dfa739 100644
--- a/hosts/configuration_server.nix
+++ b/hosts/configuration_server.nix
@@ -124,7 +124,6 @@
       options = "--delete-older-than 7d";
     };
     package = pkgs.nixVersions.stable;               # Enable nixFlakes on system
-    registry.nixpkgs.flake = inputs.nixpkgs;
     extraOptions = ''
       experimental-features = nix-command flakes
       keep-outputs          = true