diff --git a/VERSION b/VERSION
index bc577dc5a..eb42437fd 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.36.2078
\ No newline at end of file
+1.36.2079
\ No newline at end of file
diff --git a/sts/include/alibabacloud/sts/model/AssumeRoleRequest.h b/sts/include/alibabacloud/sts/model/AssumeRoleRequest.h
index 688e55b37..e462601f9 100644
--- a/sts/include/alibabacloud/sts/model/AssumeRoleRequest.h
+++ b/sts/include/alibabacloud/sts/model/AssumeRoleRequest.h
@@ -32,6 +32,8 @@ public:
 	~AssumeRoleRequest();
 	std::string getExternalId() const;
 	void setExternalId(const std::string &externalId);
+	std::string getSourceIdentity() const;
+	void setSourceIdentity(const std::string &sourceIdentity);
 	std::string getRoleSessionName() const;
 	void setRoleSessionName(const std::string &roleSessionName);
 	std::string getPolicy() const;
@@ -43,6 +45,7 @@ public:
 
 private:
 	std::string externalId_;
+	std::string sourceIdentity_;
 	std::string roleSessionName_;
 	std::string policy_;
 	std::string roleArn_;
diff --git a/sts/include/alibabacloud/sts/model/AssumeRoleResult.h b/sts/include/alibabacloud/sts/model/AssumeRoleResult.h
index 9a3d427c1..12f3c2575 100644
--- a/sts/include/alibabacloud/sts/model/AssumeRoleResult.h
+++ b/sts/include/alibabacloud/sts/model/AssumeRoleResult.h
@@ -49,12 +49,14 @@ namespace AlibabaCloud
 				AssumeRoleResult();
 				explicit AssumeRoleResult(const std::string &payload);
 				~AssumeRoleResult();
+				std::string getSourceIdentity()const;
 				AssumedRoleUser getAssumedRoleUser()const;
 				Credentials getCredentials()const;
 
 			protected:
 				void parse(const std::string &payload);
 			private:
+				std::string sourceIdentity_;
 				AssumedRoleUser assumedRoleUser_;
 				Credentials credentials_;
 
diff --git a/sts/include/alibabacloud/sts/model/AssumeRoleWithOIDCResult.h b/sts/include/alibabacloud/sts/model/AssumeRoleWithOIDCResult.h
index 9ee915a67..5da03b663 100644
--- a/sts/include/alibabacloud/sts/model/AssumeRoleWithOIDCResult.h
+++ b/sts/include/alibabacloud/sts/model/AssumeRoleWithOIDCResult.h
@@ -58,6 +58,7 @@ namespace AlibabaCloud
 				AssumeRoleWithOIDCResult();
 				explicit AssumeRoleWithOIDCResult(const std::string &payload);
 				~AssumeRoleWithOIDCResult();
+				std::string getSourceIdentity()const;
 				OIDCTokenInfo getOIDCTokenInfo()const;
 				AssumedRoleUser getAssumedRoleUser()const;
 				Credentials getCredentials()const;
@@ -65,6 +66,7 @@ namespace AlibabaCloud
 			protected:
 				void parse(const std::string &payload);
 			private:
+				std::string sourceIdentity_;
 				OIDCTokenInfo oIDCTokenInfo_;
 				AssumedRoleUser assumedRoleUser_;
 				Credentials credentials_;
diff --git a/sts/include/alibabacloud/sts/model/AssumeRoleWithSAMLResult.h b/sts/include/alibabacloud/sts/model/AssumeRoleWithSAMLResult.h
index 8bcd6979e..de2284a6b 100644
--- a/sts/include/alibabacloud/sts/model/AssumeRoleWithSAMLResult.h
+++ b/sts/include/alibabacloud/sts/model/AssumeRoleWithSAMLResult.h
@@ -56,6 +56,7 @@ namespace AlibabaCloud
 				AssumeRoleWithSAMLResult();
 				explicit AssumeRoleWithSAMLResult(const std::string &payload);
 				~AssumeRoleWithSAMLResult();
+				std::string getSourceIdentity()const;
 				SAMLAssertionInfo getSAMLAssertionInfo()const;
 				AssumedRoleUser getAssumedRoleUser()const;
 				Credentials getCredentials()const;
@@ -63,6 +64,7 @@ namespace AlibabaCloud
 			protected:
 				void parse(const std::string &payload);
 			private:
+				std::string sourceIdentity_;
 				SAMLAssertionInfo sAMLAssertionInfo_;
 				AssumedRoleUser assumedRoleUser_;
 				Credentials credentials_;
diff --git a/sts/src/StsClient.cc b/sts/src/StsClient.cc
index bfaed8515..274e8260c 100644
--- a/sts/src/StsClient.cc
+++ b/sts/src/StsClient.cc
@@ -31,21 +31,21 @@ StsClient::StsClient(const Credentials &credentials, const ClientConfiguration &
 	RpcServiceClient(SERVICE_NAME, std::make_shared<SimpleCredentialsProvider>(credentials), configuration)
 {
 	auto locationClient = std::make_shared<LocationClient>(credentials, configuration);
-	endpointProvider_ = std::make_shared<EndpointProvider>(locationClient, configuration.regionId(), SERVICE_NAME, "");
+	endpointProvider_ = std::make_shared<EndpointProvider>(locationClient, configuration.regionId(), SERVICE_NAME, "sts");
 }
 
 StsClient::StsClient(const std::shared_ptr<CredentialsProvider>& credentialsProvider, const ClientConfiguration & configuration) :
 	RpcServiceClient(SERVICE_NAME, credentialsProvider, configuration)
 {
 	auto locationClient = std::make_shared<LocationClient>(credentialsProvider, configuration);
-	endpointProvider_ = std::make_shared<EndpointProvider>(locationClient, configuration.regionId(), SERVICE_NAME, "");
+	endpointProvider_ = std::make_shared<EndpointProvider>(locationClient, configuration.regionId(), SERVICE_NAME, "sts");
 }
 
 StsClient::StsClient(const std::string & accessKeyId, const std::string & accessKeySecret, const ClientConfiguration & configuration) :
 	RpcServiceClient(SERVICE_NAME, std::make_shared<SimpleCredentialsProvider>(accessKeyId, accessKeySecret), configuration)
 {
 	auto locationClient = std::make_shared<LocationClient>(accessKeyId, accessKeySecret, configuration);
-	endpointProvider_ = std::make_shared<EndpointProvider>(locationClient, configuration.regionId(), SERVICE_NAME, "");
+	endpointProvider_ = std::make_shared<EndpointProvider>(locationClient, configuration.regionId(), SERVICE_NAME, "sts");
 }
 
 StsClient::~StsClient()
diff --git a/sts/src/model/AssumeRoleRequest.cc b/sts/src/model/AssumeRoleRequest.cc
index 1bb0ec9b8..498cf6a74 100644
--- a/sts/src/model/AssumeRoleRequest.cc
+++ b/sts/src/model/AssumeRoleRequest.cc
@@ -34,6 +34,15 @@ void AssumeRoleRequest::setExternalId(const std::string &externalId) {
   setParameter(std::string("ExternalId"), externalId);
 }
 
+std::string AssumeRoleRequest::getSourceIdentity() const {
+  return sourceIdentity_;
+}
+
+void AssumeRoleRequest::setSourceIdentity(const std::string &sourceIdentity) {
+  sourceIdentity_ = sourceIdentity;
+  setParameter(std::string("SourceIdentity"), sourceIdentity);
+}
+
 std::string AssumeRoleRequest::getRoleSessionName() const {
   return roleSessionName_;
 }
diff --git a/sts/src/model/AssumeRoleResult.cc b/sts/src/model/AssumeRoleResult.cc
index 269d42a98..6b805fed1 100644
--- a/sts/src/model/AssumeRoleResult.cc
+++ b/sts/src/model/AssumeRoleResult.cc
@@ -53,9 +53,16 @@ void AssumeRoleResult::parse(const std::string &payload)
 		credentials_.accessKeySecret = credentialsNode["AccessKeySecret"].asString();
 	if(!credentialsNode["AccessKeyId"].isNull())
 		credentials_.accessKeyId = credentialsNode["AccessKeyId"].asString();
+	if(!value["SourceIdentity"].isNull())
+		sourceIdentity_ = value["SourceIdentity"].asString();
 
 }
 
+std::string AssumeRoleResult::getSourceIdentity()const
+{
+	return sourceIdentity_;
+}
+
 AssumeRoleResult::AssumedRoleUser AssumeRoleResult::getAssumedRoleUser()const
 {
 	return assumedRoleUser_;
diff --git a/sts/src/model/AssumeRoleWithOIDCResult.cc b/sts/src/model/AssumeRoleWithOIDCResult.cc
index e5e8dd6a2..f27216378 100644
--- a/sts/src/model/AssumeRoleWithOIDCResult.cc
+++ b/sts/src/model/AssumeRoleWithOIDCResult.cc
@@ -66,9 +66,16 @@ void AssumeRoleWithOIDCResult::parse(const std::string &payload)
 		credentials_.accessKeySecret = credentialsNode["AccessKeySecret"].asString();
 	if(!credentialsNode["AccessKeyId"].isNull())
 		credentials_.accessKeyId = credentialsNode["AccessKeyId"].asString();
+	if(!value["SourceIdentity"].isNull())
+		sourceIdentity_ = value["SourceIdentity"].asString();
 
 }
 
+std::string AssumeRoleWithOIDCResult::getSourceIdentity()const
+{
+	return sourceIdentity_;
+}
+
 AssumeRoleWithOIDCResult::OIDCTokenInfo AssumeRoleWithOIDCResult::getOIDCTokenInfo()const
 {
 	return oIDCTokenInfo_;
diff --git a/sts/src/model/AssumeRoleWithSAMLResult.cc b/sts/src/model/AssumeRoleWithSAMLResult.cc
index cb1f5b491..e2b8f9424 100644
--- a/sts/src/model/AssumeRoleWithSAMLResult.cc
+++ b/sts/src/model/AssumeRoleWithSAMLResult.cc
@@ -62,9 +62,16 @@ void AssumeRoleWithSAMLResult::parse(const std::string &payload)
 		credentials_.accessKeySecret = credentialsNode["AccessKeySecret"].asString();
 	if(!credentialsNode["AccessKeyId"].isNull())
 		credentials_.accessKeyId = credentialsNode["AccessKeyId"].asString();
+	if(!value["SourceIdentity"].isNull())
+		sourceIdentity_ = value["SourceIdentity"].asString();
 
 }
 
+std::string AssumeRoleWithSAMLResult::getSourceIdentity()const
+{
+	return sourceIdentity_;
+}
+
 AssumeRoleWithSAMLResult::SAMLAssertionInfo AssumeRoleWithSAMLResult::getSAMLAssertionInfo()const
 {
 	return sAMLAssertionInfo_;