diff --git a/modules/environments/home-assistant/default.nix b/modules/environments/home-assistant/default.nix
index fc77dba..e3e8fe4 100644
--- a/modules/environments/home-assistant/default.nix
+++ b/modules/environments/home-assistant/default.nix
@@ -24,7 +24,6 @@ in
       extraComponents = [
         "matter"
         "mobile_app"
-        "zha"
       ];
     };
     services.home-assistant.config = {
@@ -33,9 +32,6 @@ in
       mobile_app = {};
     };
 
-    # Allow the `hass` service user to open the ZBT-2 USB-CDC serial endpoint.
-    users.users.hass.extraGroups = [ "dialout" ];
-
     my.homepage.services = [
       {
         group = "Services";