diff --git a/dubbo_client/registry.py b/dubbo_client/registry.py
index 062908b..c3b2671 100644
--- a/dubbo_client/registry.py
+++ b/dubbo_client/registry.py
@@ -147,6 +147,7 @@
         # 如果已经存在，首先删除原有的服务的集合
         if interface in self._service_provides:
             del self._service_provides[interface]
+            logger.debug("delete node {0}".format(interface))
         for child_node in nodes:
             node = urllib.unquote(child_node).decode('utf8')
             logger.debug('child of node is {0}'.format(node))
diff --git a/version.txt b/version.txt
index 69127db..7d70f13 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.0.0b5
\ No newline at end of file
+1.0.0b6
\ No newline at end of file