diff --git a/server/data/User.ts b/server/data/User.ts
index edb03ac..67de0ad 100644
--- a/server/data/User.ts
+++ b/server/data/User.ts
@@ -1,8 +1,12 @@
 // @ts-types="npm:sequelize"
-import { Sequelize, Model, DataTypes } from 'sequelize'
+import { Sequelize, Model, DataTypes, CreationOptional } from 'sequelize'
 
 export default class User extends Model {
-    declare created_id: number 
+    declare created_id: CreationOptional<number>
+    declare user_name: string | null
+    declare nick_name: string | null
+    declare avatar: Blob
+
     static async initTable(sequelize: Sequelize, name: string) {
         this.init({
             created_id: {
@@ -20,8 +24,8 @@ export default class User extends Model {
             },
             avatar: {
                 type: DataTypes.BLOB,
+                allowNull: true,
             },
-            
         }, {
             sequelize: sequelize,
             tableName: name,