diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index ff107af21..6c80b0884 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -5896,6 +5896,7 @@ matrix_element_call_container_labels_traefik_path_prefix: "{{ matrix_element_cal
 matrix_element_call_container_labels_traefik_rule: "Host(`{{ matrix_element_call_container_labels_traefik_hostname }}`)"
 matrix_element_call_container_labels_traefik_entrypoints: "websecure"
 matrix_element_call_container_labels_traefik_tls_certResolver: "default"
+matrix_element_call_container_labels_traefik_additional_response_headers: {}
 
 # JWT Service Configuration
 matrix_element_call_jwt_service_url: "https://sfu-jwt.{{ matrix_domain }}"  # Default JWT service URL; adjust as needed