diff --git a/apps/settings/serializers/public.py b/apps/settings/serializers/public.py
index d0eafd018..e9861eb72 100644
--- a/apps/settings/serializers/public.py
+++ b/apps/settings/serializers/public.py
@@ -16,6 +16,7 @@ class PrivateSettingSerializer(PublicSettingSerializer):
     OLD_PASSWORD_HISTORY_LIMIT_COUNT = serializers.IntegerField()
     TICKET_AUTHORIZE_DEFAULT_TIME = serializers.IntegerField()
     TICKET_AUTHORIZE_DEFAULT_TIME_UNIT = serializers.CharField()
+    AUTH_LDAP_SYNC_ORG_ID = serializers.CharField()
     SECURITY_MAX_IDLE_TIME = serializers.IntegerField()
     SECURITY_VIEW_AUTH_NEED_MFA = serializers.BooleanField()
     SECURITY_MFA_VERIFY_TTL = serializers.IntegerField()