diff --git a/hosts/common.nix b/hosts/common.nix
index 4c1aae0..c35aeaf 100644
--- a/hosts/common.nix
+++ b/hosts/common.nix
@@ -117,6 +117,7 @@
       dates = "weekly";
       options = "-d --delete-older-than 7d";
     };
+    registry.unstable.flake = inputs.nixpkgs-unstable;
   };
 
   home-manager = {