diff --git a/cos.go b/cos.go
index ac005f8..d9a67b8 100644
--- a/cos.go
+++ b/cos.go
@@ -21,7 +21,7 @@ import (
 
 const (
 	// Version current go sdk version
-	Version               = "0.7.4"
+	Version               = "0.7.5"
 	userAgent             = "cos-go-sdk-v5/" + Version
 	contentTypeXML        = "application/xml"
 	defaultServiceBaseURL = "http://service.cos.myqcloud.com"