diff --git a/openstack/ecs/v1/cloudservers/requests.go b/openstack/ecs/v1/cloudservers/requests.go
index 473158dab..bc17c9862 100644
--- a/openstack/ecs/v1/cloudservers/requests.go
+++ b/openstack/ecs/v1/cloudservers/requests.go
@@ -148,6 +148,8 @@ type ServerExtendParam struct {
 
 	IsAutoPay string `json:"isAutoPay,omitempty"`
 
+	EnterpriseProjectId string `json:"enterprise_project_id,omitempty"`
+
 	SupportAutoRecovery string `json:"support_auto_recovery,omitempty"`
 }