diff --git a/wxpy/__init__.py b/wxpy/__init__.py
index 86a6edf..8a172a1 100644
--- a/wxpy/__init__.py
+++ b/wxpy/__init__.py
@@ -54,7 +54,7 @@ def reply_my_friend(msg):
 from .utils import dont_raise_response_error, embed, ensure_one, mutual_friends
 
 __title__ = 'wxpy'
-__version__ = '0.3.4.1'
+__version__ = '0.3.5'
 __author__ = 'Youfou'
 __license__ = 'MIT'
 __copyright__ = '2017, Youfou'
diff --git a/wxpy/utils/misc.py b/wxpy/utils/misc.py
index f6afc02..e2ab7f9 100644
--- a/wxpy/utils/misc.py
+++ b/wxpy/utils/misc.py
@@ -250,7 +250,7 @@ def get_receiver(receiver=None):
         raise TypeError('expected Chat, Bot, str, True or None')
 
 
-def enhance_connection(session, pool_connections=30, pool_maxsize=30, max_retries=3):
+def enhance_connection(session, pool_connections=30, pool_maxsize=30, max_retries=30):
     """
     增强 requests.Session 对象的网络连接性能