diff --git a/database/migrations/2025_06_19_105447_alert_users_table.php b/database/migrations/2025_06_19_105447_alert_users_table.php
index d0ac907..4f92a64 100644
--- a/database/migrations/2025_06_19_105447_alert_users_table.php
+++ b/database/migrations/2025_06_19_105447_alert_users_table.php
@@ -15,6 +15,7 @@ return new class extends Migration
     {
         Schema::table('users', function (Blueprint $table) {
             $table->string('no')->nullable()->comment('学号');
+            $table->date('birthday')->nullable()->comment('生日')->change();
         });
     }