diff --git a/CHANGELOG.md b/CHANGELOG.md
index fd00fed..f738dcc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## CHANGE LOG
 
+### v6.3.0
+
+- 添加 authorize_download_url_2 方法，对包含中文或其它 utf-8 字符的 Key 做下载授权。 [https://github.com/qiniu/ruby-sdk/pull/95](https://github.com/qiniu/ruby-sdk/pull/95)
+
 ### v6.2.4
 
 - 调整User Agent。 [https://github.com/qiniu/ruby-sdk/pull/94](https://github.com/qiniu/ruby-sdk/pull/94)
diff --git a/Gemfile.lock b/Gemfile.lock
index e83b991..069dbbc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    qiniu (6.2.4)
+    qiniu (6.3.0)
       json (~> 1.7)
       mime-types (~> 1.19)
       rest-client (~> 1.6)
diff --git a/README.md b/README.md
index 51e2dde..ffa495b 100755
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
 
 在您 Ruby 应用程序的 `Gemfile` 文件中，添加如下一行代码：
 
-    gem 'qiniu', '~> 6.2.0'
+    gem 'qiniu', '~> 6.3.0'
 
 然后，在应用程序所在的目录下，可以运行 `bundle` 安装依赖包：
 
diff --git a/lib/qiniu/version.rb b/lib/qiniu/version.rb
index efd4b95..2d26240 100755
--- a/lib/qiniu/version.rb
+++ b/lib/qiniu/version.rb
@@ -3,8 +3,8 @@
 module Qiniu
     module Version
       MAJOR = 6
-      MINOR = 2
-      PATCH = 4
+      MINOR = 3
+      PATCH = 0
       # Returns a version string by joining <tt>MAJOR</tt>, <tt>MINOR</tt>, and <tt>PATCH</tt> with <tt>'.'</tt>
       #
       # Example