diff --git a/kubernetes/apps/monitoring/grafana/app/helmrelease.yaml b/kubernetes/apps/monitoring/grafana/app/helmrelease.yaml
index bb9f530..9b34bb5 100644
--- a/kubernetes/apps/monitoring/grafana/app/helmrelease.yaml
+++ b/kubernetes/apps/monitoring/grafana/app/helmrelease.yaml
@@ -51,6 +51,7 @@ spec:
         icon: signin
         scopes: openid profile email
         empty_scopes: false
+        login_attribute_path: preferred_username
         groups_attribute_path: groups
         name_attribute_path: name
         use_pkce: true