diff --git a/defaults/main.yml b/defaults/main.yml
index a986c3a..adabec6 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,5 +1,10 @@
 ---
 zigbee2mqtt_version: 0.1.8
-zigbee2mqtt_group: zigbee2mqtt
+
 zigbee2mqtt_user: zigbee2mqtt
+zigbee2mqtt_group: zigbee2mqtt
+zigbee2mqtt_secondary_groups:
+  - tty
+  - dialout
+
 zigbee2mqtt_base_dir: /opt/zigbee2mqtt
diff --git a/tasks/prepare.yml b/tasks/prepare.yml
index 165d0a2..3e3f4f3 100644
--- a/tasks/prepare.yml
+++ b/tasks/prepare.yml
@@ -41,5 +41,6 @@
     user:
       name: "{{ zigbee2mqtt_user }}"
       group: "{{ zigbee2mqtt_group }}"
+      groups: "{{ zigbee2mqtt_secondary_groups }}"
   become: True
   become_user: root