diff --git a/lib/aliyun/version.rb b/lib/aliyun/version.rb
index c4b7826..3d5b730 100644
--- a/lib/aliyun/version.rb
+++ b/lib/aliyun/version.rb
@@ -1,3 +1,3 @@
 module Aliyun
-  VERSION = "0.4.1"
+  VERSION = "0.4.2"
 end