diff --git a/casdoorsdk/user.go b/casdoorsdk/user.go
index c3a419f..5dd5f85 100644
--- a/casdoorsdk/user.go
+++ b/casdoorsdk/user.go
@@ -61,6 +61,7 @@ type User struct {
 	UpdatedTime string `xorm:"varchar(100)" json:"updatedTime"`
 
 	Id                string   `xorm:"varchar(100) index" json:"id"`
+	ExternalId        string   `xorm:"varchar(100) index" json:"externalId"`
 	Type              string   `xorm:"varchar(100)" json:"type"`
 	Password          string   `xorm:"varchar(100)" json:"password"`
 	PasswordSalt      string   `xorm:"varchar(100)" json:"passwordSalt"`