diff --git a/VERSION b/VERSION
index b60d719..7ada0d3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.8.4
+0.8.5
diff --git a/src/wechaty_puppet_service/utils.py b/src/wechaty_puppet_service/utils.py
index be32db9..4e40a95 100644
--- a/src/wechaty_puppet_service/utils.py
+++ b/src/wechaty_puppet_service/utils.py
@@ -25,16 +25,20 @@
 import socket
 from logging import Logger
 from typing import Optional, Tuple
-from ping3 import ping  # type: ignore
+from ping3 import ping, errors  # type: ignore
 from wechaty_puppet.exceptions import WechatyPuppetConfigurationError  # type: ignore
 
 
 def extract_host_and_port(url: str) -> Tuple[str, Optional[int]]:
-    """it shoule be <host>:<port> format, but it can be a service name.
-    If it's in docker cluster network, the port can be None
+    """
+    It shoule be <host>:<port> format, but it can be a service name.
+    If it's in docker cluster network, the port can be None.
 
     Args:
         url (str): the service endpoint or names
+
+    Return:
+        host (str), port (Optional[int])
     """
     if ':' in url:
         host, port = url.split(':')
@@ -49,16 +53,32 @@ def extract_host_and_port(url: str) -> Tuple[str, Optional[int]]:
 
 def test_endpoint(end_point: str, log: Logger) -> int:
     """
-        test_endpoint:
-        1.If there is port: telnet
-        2.If there is host/domain: ping or
+    Check end point is valid
+    Use different method:
+        1. If there is port: telnet
+        2. If there is host/domain: ping
+
+    Args:
+        end_point (str): host and port
+        log (Logger): for debug
+
+    Return:
+        return True if end point is valid, otherwise False
+
     """
     tn = Telnet()
     host, port = extract_host_and_port(end_point)
 
     res = True
     if port is None:
-        if ping(host) is False:
+        try:
+            if ping(host) is False:
+                res = False
+        except PermissionError as pe:
+            log.error(pe)
+            res = False
+        except errors.PingError as e:
+            log.error(f'got a ping error:\n{e}')
             res = False
     else:
         try: