diff --git a/leancloud/object_.py b/leancloud/object_.py
index b9c5b645..84202b34 100644
--- a/leancloud/object_.py
+++ b/leancloud/object_.py
@@ -10,7 +10,7 @@
 import warnings
 
 import iso8601
-from werkzeug import LocalProxy
+from werkzeug.local import LocalProxy
 
 import leancloud
 from leancloud import utils
diff --git a/leancloud/push.py b/leancloud/push.py
index 86e6c511..fe2b04c8 100644
--- a/leancloud/push.py
+++ b/leancloud/push.py
@@ -19,7 +19,12 @@ class Installation(Object):
 
 
 class Notification(Object):
-    pass
+
+    def fetch(self):
+        """同步服务器的 Notification 数据
+        """
+        response = client.get('/tables/Notifications/{0}'.format(self.id))
+        self._update_data(response.json())
 
 
 def send(data, channels=None, push_time=None, expiration_time=None, expiration_interval=None, where=None, cql=None):
diff --git a/leancloud/utils.py b/leancloud/utils.py
index f85af2c2..a3665ba0 100644
--- a/leancloud/utils.py
+++ b/leancloud/utils.py
@@ -13,7 +13,7 @@
 
 import arrow
 import iso8601
-from werkzeug import LocalProxy
+from werkzeug.local import LocalProxy
 import dateutil.tz as tz
 
 import leancloud
diff --git a/tests/test_push.py b/tests/test_push.py
index 31783bff..744cdcf9 100644
--- a/tests/test_push.py
+++ b/tests/test_push.py
@@ -7,7 +7,7 @@
 import os
 from datetime import datetime
 
-from nose.tools import with_setup #type: ignore
+from nose.tools import with_setup  # type: ignore
 
 import leancloud
 from leancloud import push
@@ -23,7 +23,7 @@ def setup_func():
 
 
 @with_setup(setup_func)
-def test_basic_push(): # type: () -> None
+def test_basic_push():  # type: () -> None
     instanlation = leancloud.Installation()
     instanlation.set('deviceType', 'ios')
     instanlation.set('deviceToken', 'xxx')
@@ -40,7 +40,7 @@ def test_basic_push(): # type: () -> None
             "launch-image": "",
         }
     }
-    t = datetime.fromtimestamp(0)
     query = leancloud.Query('_Installation').equal_to('objectId', 'xxx')
     notification = push.send(data, where=query, push_time=datetime.now())
+    notification.fetch()
     assert(notification.id)