diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef4bcc98..4ff399c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 7.21.1
+* 修复
+  * 修复通过 ResumeUploaderV2 上传的文件无法正确设置 Content-Type 的问题
+
 ## 7.21.0
 * 新增
   * 统一环境变量和配置文件
diff --git a/README.md b/README.md
index be32fa2a..42c3d336 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ github.com/qiniu/go-sdk
 在您的项目中的 `go.mod` 文件内添加这行代码
 
 ```
-require github.com/qiniu/go-sdk/v7 v7.21.0
+require github.com/qiniu/go-sdk/v7 v7.21.1
 ```
 
 并且在项目中使用 `"github.com/qiniu/go-sdk/v7"` 引用 Qiniu Go SDK。
diff --git a/conf/conf.go b/conf/conf.go
index ebcad5ce..271e9d20 100644
--- a/conf/conf.go
+++ b/conf/conf.go
@@ -4,7 +4,7 @@ import (
 	"github.com/qiniu/go-sdk/v7/internal/env"
 )
 
-const Version = "7.21.0"
+const Version = "7.21.1"
 
 const (
 	CONTENT_TYPE_JSON      = "application/json"