diff --git a/nixos/hosts/happystaticbuzz/default.nix b/nixos/hosts/happystaticbuzz/default.nix
index 173e93c..93eeaaa 100644
--- a/nixos/hosts/happystaticbuzz/default.nix
+++ b/nixos/hosts/happystaticbuzz/default.nix
@@ -15,8 +15,9 @@
     enable = true;
     settings = {
       application-name = "happy static buzzing";
-      bind-address = "::";
+      bind-address = "[::]";
       host = "happ.ystatic.buzz";
+      account-registration-open = false;
     };
   };
 }