diff --git a/CHANGELOG b/CHANGELOG
index 2f33aea96..237df3fdc 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+2020-10-21 Version: patch
+- Update cert API.
+
 2020-10-21 Version: patch
 - Add PHP sdk.
 
diff --git a/dcdn/include/alibabacloud/dcdn/model/DescribeDcdnRefreshTasksRequest.h b/dcdn/include/alibabacloud/dcdn/model/DescribeDcdnRefreshTasksRequest.h
index 283b41a66..2664bfaa4 100644
--- a/dcdn/include/alibabacloud/dcdn/model/DescribeDcdnRefreshTasksRequest.h
+++ b/dcdn/include/alibabacloud/dcdn/model/DescribeDcdnRefreshTasksRequest.h
@@ -41,8 +41,6 @@ namespace AlibabaCloud
 				void setStartTime(const std::string& startTime);
 				int getPageNumber()const;
 				void setPageNumber(int pageNumber);
-				std::string getResourceGroupId()const;
-				void setResourceGroupId(const std::string& resourceGroupId);
 				std::string getSecurityToken()const;
 				void setSecurityToken(const std::string& securityToken);
 				int getPageSize()const;
@@ -64,7 +62,6 @@ namespace AlibabaCloud
 				std::string objectPath_;
 				std::string startTime_;
 				int pageNumber_;
-				std::string resourceGroupId_;
 				std::string securityToken_;
 				int pageSize_;
 				std::string objectType_;
diff --git a/dcdn/src/model/DescribeDcdnRefreshTasksRequest.cc b/dcdn/src/model/DescribeDcdnRefreshTasksRequest.cc
index c01dee32c..22116732a 100644
--- a/dcdn/src/model/DescribeDcdnRefreshTasksRequest.cc
+++ b/dcdn/src/model/DescribeDcdnRefreshTasksRequest.cc
@@ -60,17 +60,6 @@ void DescribeDcdnRefreshTasksRequest::setPageNumber(int pageNumber)
 	setParameter("PageNumber", std::to_string(pageNumber));
 }
 
-std::string DescribeDcdnRefreshTasksRequest::getResourceGroupId()const
-{
-	return resourceGroupId_;
-}
-
-void DescribeDcdnRefreshTasksRequest::setResourceGroupId(const std::string& resourceGroupId)
-{
-	resourceGroupId_ = resourceGroupId;
-	setParameter("ResourceGroupId", resourceGroupId);
-}
-
 std::string DescribeDcdnRefreshTasksRequest::getSecurityToken()const
 {
 	return securityToken_;