diff --git a/dubbo/common/exceptions.py b/dubbo/common/exceptions.py
index e267e14..30665be 100644
--- a/dubbo/common/exceptions.py
+++ b/dubbo/common/exceptions.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 
 
-class DubboException(Exception):
+class DubboException(RuntimeError):
     pass
 
 
@@ -12,21 +12,21 @@
     pass
 
 
-class HessianTypeError(Exception):
+class HessianTypeError(DubboException):
     """
     Hessian解码的时候发生了解析类型错误
     """
     pass
 
 
-class RegisterException(Exception):
+class RegisterException(DubboException):
     """
     与注册中心相关的异常
     """
     pass
 
 
-class DubboRequestTimeoutException(Exception):
+class DubboRequestTimeoutException(DubboException):
     """
     dubbo请求超时异常
     """
diff --git a/setup.py b/setup.py
index 44e91d9..2cdf35b 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 setup(
     name='python-dubbo',
-    version='0.0.3-beta1',
+    version='0.0.3-beta2',
     url='https://github.com/RitterHou/python-dubbo',
     author='hourui',
     author_email='hourui@qianmi.com',