diff --git a/instances/heimdall/configuration.nix b/instances/heimdall/configuration.nix
index e99886d..8df0fc6 100644
--- a/instances/heimdall/configuration.nix
+++ b/instances/heimdall/configuration.nix
@@ -72,6 +72,16 @@ in
   '';
 
   services = {
+    zigbee2mqtt = {
+      enable = true;
+      settings = {
+        homeassistant = config.services.home-assistant.enable;
+        permit_join = true;
+        serial = {
+          port = "/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0";
+        };
+      };
+    };
     grafana = {
       enable = true;
       settings.server = {