diff --git a/sjrpc/core/rpcconnection.py b/sjrpc/core/rpcconnection.py
index ccb178c31de3cadf7d7f10dc5cccbdda001d7cf9..cf9153baefeaaf11b075bd811a20753098197c8c 100644
--- a/sjrpc/core/rpcconnection.py
+++ b/sjrpc/core/rpcconnection.py
@@ -12,7 +12,7 @@ import struct
 import socket
 import logging
 import threading
-from uuid import uuid1
+from uuid import uuid4
 from Queue import Queue
 
 from sjrpc.utils import BytesBuffer
@@ -186,7 +186,7 @@ class RpcConnection(object):
         msg['method'] = method_name
         msg['args'] = args
         msg['kwargs'] = kwargs
-        msg['id'] = str(uuid1())
+        msg['id'] = str(uuid4())
         
         self._send(msg)