diff --git a/apps/applications/migrations/0006_application.py b/apps/applications/migrations/0006_application.py
index 0333b860d..423e9468a 100644
--- a/apps/applications/migrations/0006_application.py
+++ b/apps/applications/migrations/0006_application.py
@@ -2,7 +2,6 @@
 
 from django.db import migrations, models
 import django.db.models.deletion
-import django_mysql.models
 import uuid
 
 
diff --git a/apps/authentication/signal_handlers.py b/apps/authentication/signal_handlers.py
index e9de006fe..b1f55f689 100644
--- a/apps/authentication/signal_handlers.py
+++ b/apps/authentication/signal_handlers.py
@@ -10,6 +10,7 @@ from apps.jumpserver.settings.auth import AUTHENTICATION_BACKENDS_THIRD_PARTY
 from .signals import post_auth_success, post_auth_failed, user_auth_failed, user_auth_success
 
 
+@receiver(user_logged_in)
 def on_user_auth_login_success(sender, user, request, **kwargs):
     # 失效 perms 缓存
     user.expire_rbac_perms_cache()
@@ -51,6 +52,3 @@ def on_user_login_success(sender, request, user, backend, create=False, **kwargs
 def on_user_login_failed(sender, username, request, reason, backend, **kwargs):
     request.session['auth_backend'] = backend
     post_auth_failed.send(sender, username=username, request=request, reason=reason)
-
-
-user_logged_in.connect(on_user_auth_login_success)