diff --git a/model/user.go b/model/user.go
index e738b1ba..904ad686 100644
--- a/model/user.go
+++ b/model/user.go
@@ -3,18 +3,19 @@ package model
 import (
 	"errors"
 	"fmt"
-	"gorm.io/gorm"
 	"one-api/common"
 	"strings"
+
+	"gorm.io/gorm"
 )
 
 // User if you add sensitive fields, don't forget to clean them in setupLogin function.
 // Otherwise, the sensitive information will be saved on local storage in plain text!
 type User struct {
 	Id               int    `json:"id"`
-	Username         string `json:"username" gorm:"unique;index" validate:"max=12"`
-	Password         string `json:"password" gorm:"not null;" validate:"min=8,max=20"`
-	DisplayName      string `json:"display_name" gorm:"index" validate:"max=20"`
+	Username         string `json:"username" gorm:"unique;index" validate:"max=255"`
+	Password         string `json:"password" gorm:"not null;" validate:"min=8,max=255"`
+	DisplayName      string `json:"display_name" gorm:"index" validate:"max=255"`
 	Role             int    `json:"role" gorm:"type:int;default:1"`   // admin, common
 	Status           int    `json:"status" gorm:"type:int;default:1"` // enabled, disabled
 	Email            string `json:"email" gorm:"index" validate:"max=50"`