diff --git a/hosts/common.nix b/hosts/common.nix
index b334b5f..2e8b31a 100644
--- a/hosts/common.nix
+++ b/hosts/common.nix
@@ -1,4 +1,4 @@
-{ ... }:
+{ inputs, ... }:
 {
   nix = {
     settings = {
@@ -26,6 +26,7 @@
     extraOptions = ''
       	    builders-use-substitutes = true
       	  '';
+    registry.nixpkgs.flake = inputs.nixpkgs;
   };
   time.timeZone = "America/Toronto";
   networking.firewall.logRefusedConnections = false;