diff --git a/CHANGELOG.md b/CHANGELOG.md
index b63c5737..aaf70363 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 #Changelog
 
+## 7.2.2 (2017-12-07)
+## 修正
+* 进度回调重复
+
 ## 7.2.1 (2017-12-05)
 ## 修正
 * 进度回调实现导致内存泄漏
diff --git a/Qiniu.podspec b/Qiniu.podspec
index 488e859c..45d9c8d8 100755
--- a/Qiniu.podspec
+++ b/Qiniu.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'Qiniu'
-  s.version      = '7.2.1'
+  s.version      = '7.2.2'
   s.summary      = 'Qiniu Resource Storage SDK for iOS and Mac'
   s.homepage     = 'https://github.com/qiniu/objc-sdk'
   s.social_media_url = 'http://weibo.com/qiniutek'
diff --git a/QiniuSDK/Common/QNVersion.h b/QiniuSDK/Common/QNVersion.h
index a00eaa8a..bbde5602 100755
--- a/QiniuSDK/Common/QNVersion.h
+++ b/QiniuSDK/Common/QNVersion.h
@@ -11,4 +11,4 @@
 /**
  *    sdk 版本
  */
-static const NSString *kQiniuVersion = @"7.2.1";
+static const NSString *kQiniuVersion = @"7.2.2";
diff --git a/QiniuSDK/Http/QNSessionManager.m b/QiniuSDK/Http/QNSessionManager.m
index 647f9caa..c69bac8f 100644
--- a/QiniuSDK/Http/QNSessionManager.m
+++ b/QiniuSDK/Http/QNSessionManager.m
@@ -68,9 +68,9 @@ @interface QNSessionManager ()
 @property UInt32 timeout;
 @property (nonatomic, strong) QNUrlConvert converter;
 @property bool noProxy;
-@property (nonatomic,strong) NSDictionary *proxyDict;
+@property (nonatomic, strong) NSDictionary *proxyDict;
 @property (nonatomic) QNDnsManager *dns;
-@property (nonatomic,strong) NSOperationQueue *delegateQueue;
+@property (nonatomic, strong) NSOperationQueue *delegateQueue;
 @end
 
 @implementation QNSessionManager