diff --git a/nixos/servnerr-4/containers.nix b/nixos/servnerr-4/containers.nix
index 58835db..747133a 100644
--- a/nixos/servnerr-4/containers.nix
+++ b/nixos/servnerr-4/containers.nix
@@ -37,7 +37,12 @@
     containers = {
       home-assistant = {
         image = "ghcr.io/home-assistant/home-assistant:stable";
-        extraOptions = [ "--network=host" ];
+        extraOptions = [
+          # Expose on the host.
+          "--network=host"
+          # Pass in Home Assistant SkyConnect device.
+          "--device=/dev/serial/by-id/usb-Nabu_Casa_SkyConnect_v1.0_4c34810ea196ed11a365c698a7669f5d-if00-port0"
+        ];
         ports = [ "8123:8123" ];
         volumes =
           [ "/etc/localtime:/etc/localtime:ro" "/var/lib/hass:/config" ];