diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 7abc19d..23ed1ab 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 0.11.1
+current_version = 0.12.0
 
 [bumpversion:file:cos.go]
 
diff --git a/cos.go b/cos.go
index 212f23f..182d6ac 100644
--- a/cos.go
+++ b/cos.go
@@ -21,7 +21,7 @@ import (
 
 const (
 	// Version ...
-	Version               = "0.11.1"
+	Version               = "0.12.0"
 	userAgent             = "go-cos/" + Version
 	contentTypeXML        = "application/xml"
 	defaultServiceBaseURL = "https://service.cos.myqcloud.com"