diff --git a/AliyunOSSSDK/OSSDefine.h b/AliyunOSSSDK/OSSDefine.h
index 9a58352..5140fef 100644
--- a/AliyunOSSSDK/OSSDefine.h
+++ b/AliyunOSSSDK/OSSDefine.h
@@ -16,7 +16,7 @@
 #elif TARGET_OS_OSX
 #define OSSUAPrefix                             @"aliyun-sdk-mac"
 #endif
-#define OSSSDKVersion                           @"2.10.11"
+#define OSSSDKVersion                           @"2.10.12"
 
 #define OSSListBucketResultXMLTOKEN             @"ListBucketResult"
 #define OSSNameXMLTOKEN                         @"Name"
diff --git a/AliyunOSSiOS.podspec b/AliyunOSSiOS.podspec
index ca7f041..7ece417 100644
--- a/AliyunOSSiOS.podspec
+++ b/AliyunOSSiOS.podspec
@@ -2,7 +2,7 @@ Pod::Spec.new do |s|
 
   s.name         = "AliyunOSSiOS"
 
-  s.version      = "2.10.11"
+  s.version      = "2.10.12"
 
   s.summary      = "An iOS SDK for Aliyun Object Storage Service"
 
diff --git a/CHANGLOG.txt b/CHANGLOG.txt
index 6455469..00bc4c6 100755
--- a/CHANGLOG.txt
+++ b/CHANGLOG.txt
@@ -15,6 +15,11 @@ pod dependency：   pod 'AliyunOSSiOS'
 
 Update Logs:
 
+2021/12/30
+- release 2.10.12
+1.Fixed an exception thrown by resumableupload when the number of parts exceeds 5000
+2.Fix the problem of CRC verification failure caused by network disconnection in resumableupload
+
 2021/11/19
 - release 2.10.11
 1.Add network monitoring configuration