diff --git a/k8s/infra/logging/grafana-values.yaml b/k8s/infra/logging/grafana-values.yaml
index c27e4f2..17079e9 100644
--- a/k8s/infra/logging/grafana-values.yaml
+++ b/k8s/infra/logging/grafana-values.yaml
@@ -73,7 +73,7 @@ grafana.ini:
   auth.generic_oauth:
     enabled: true
     name: Authentik
-    allow_sign_up: true
+    allow_sign_up: false
     client_id: grafana
     scopes: openid email profile groups
     auth_url: https://authentik.riotpiao.com/application/o/authorize/