diff --git a/modules/kubernetes/monitoring/grafana_chart_values.yaml b/modules/kubernetes/monitoring/grafana_chart_values.yaml
index 4ee908dd..de631e18 100644
--- a/modules/kubernetes/monitoring/grafana_chart_values.yaml
+++ b/modules/kubernetes/monitoring/grafana_chart_values.yaml
@@ -9,6 +9,8 @@ ingress:
   annotations:
     kubernetes.io/ingress.class: nginx
     nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
+    nginx.ingress.kubernetes.io/auth-tls-verify-client: "on"
+    nginx.ingress.kubernetes.io/auth-tls-secret: "default/ca-secret"
   tls:
     - secretName: "tls-secret"
       hosts: