diff --git a/services/home-assistant/default.nix b/services/home-assistant/default.nix
index 5ecef0f..e30aeb4 100644
--- a/services/home-assistant/default.nix
+++ b/services/home-assistant/default.nix
@@ -44,7 +44,7 @@
     enable = true;
     package = pkgs.unstable.zigbee2mqtt;
     settings = {
-      permit_join = true;
+      permit_join = false;
       serial.port = "/dev/ttyUSB0";
     };
   };