diff --git a/apps/settings/serializers/public.py b/apps/settings/serializers/public.py
index ebefcb717..0925df490 100644
--- a/apps/settings/serializers/public.py
+++ b/apps/settings/serializers/public.py
@@ -22,6 +22,7 @@ class PrivateSettingSerializer(PublicSettingSerializer):
     AUTH_LDAP_SYNC_ORG_IDS = serializers.ListField()
     SECURITY_MAX_IDLE_TIME = serializers.IntegerField()
     SECURITY_VIEW_AUTH_NEED_MFA = serializers.BooleanField()
+    SECURITY_MFA_AUTH = serializers.IntegerField()
     SECURITY_MFA_VERIFY_TTL = serializers.IntegerField()
     SECURITY_COMMAND_EXECUTION = serializers.BooleanField()
     SECURITY_COMMAND_BLACKLIST = serializers.ListField()