diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91b7c9e..4ce1736 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,16 @@
 # Change Log
 All notable changes to QingCloud SDK for Go will be documented in this file.
 
+## [v2.0.0-alpha.9] - 2017-08-23
+
+### Added
+
+- Add vxnetid and loadbalancertype parms for load balancer
+
+### Fixed
+
+- Fixed vxnet section in response of DescribeInstances
+
 ## [v2.0.0-alpha.8] - 2017-08-13
 
 ### Added
diff --git a/service/types.go b/service/types.go
index b79b2f4..0b4bb20 100644
--- a/service/types.go
+++ b/service/types.go
@@ -2728,10 +2728,7 @@ type VxNet struct {
 	CreateTime       *time.Time `json:"create_time" name:"create_time" format:"ISO 8601"`
 	Description      *string    `json:"description" name:"description"`
 	InstanceIDs      []*string  `json:"instance_ids" name:"instance_ids"`
-	NICID            *string    `json:"nic_id" name:"nic_id"`
 	Owner            *string    `json:"owner" name:"owner"`
-	PrivateIP        *string    `json:"private_ip" name:"private_ip"`
-	Role             *int       `json:"role" name:"role"`
 	Router           *Router    `json:"router" name:"router"`
 	Tags             []*Tag     `json:"tags" name:"tags"`
 	VpcRouterID      *string    `json:"vpc_router_id" name:"vpc_router_id"`
diff --git a/version.go b/version.go
index faae5b1..3eb6d9c 100644
--- a/version.go
+++ b/version.go
@@ -20,4 +20,4 @@
 package sdk
 
 // Version number.
-const Version = "2.0.0-alpha.8"
+const Version = "2.0.0-alpha.9"