diff --git a/apps/settings/signals_handler.py b/apps/settings/signals_handler.py
index ef649f732..6264fb9e6 100644
--- a/apps/settings/signals_handler.py
+++ b/apps/settings/signals_handler.py
@@ -6,6 +6,7 @@ import threading
 from django.dispatch import receiver
 from django.db.models.signals import post_save, pre_save
 from django.utils.functional import LazyObject
+from django.db import close_old_connections
 
 from jumpserver.utils import current_request
 from common.decorator import on_transaction_commit
@@ -75,6 +76,7 @@ def subscribe_settings_change(sender, **kwargs):
             try:
                 sub = setting_pub_sub.subscribe()
                 for msg in sub.listen():
+                    close_old_connections()
                     if msg["type"] != "message":
                         continue
                     item = msg['data'].decode()
@@ -82,6 +84,7 @@ def subscribe_settings_change(sender, **kwargs):
                     Setting.refresh_item(item)
             except Exception as e:
                 logger.exception(f'subscribe_settings_change: {e}')
+                close_old_connections()
                 Setting.refresh_all_settings()
 
     t = threading.Thread(target=keep_subscribe)