diff --git a/src/Oms.Application/Services/Orders/OrderService.OrderEdit.cs b/src/Oms.Application/Services/Orders/OrderService.OrderEdit.cs
index 2fad81d..88b9ece 100644
--- a/src/Oms.Application/Services/Orders/OrderService.OrderEdit.cs
+++ b/src/Oms.Application/Services/Orders/OrderService.OrderEdit.cs
@@ -1,5 +1,7 @@
+using System.Data;
 using System.Globalization;
 using Fake.Application;
+using Fake.UnitOfWork;
 using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json;
 using Oms.Application.Dtos.Channels;
@@ -24,8 +26,10 @@ public partial class OrderService
 
     /// <summary>
     /// 编辑订单详情（基本信息、发件人、收件人）。
+    /// 跟踪号变更时会写轨迹 Upsert Outbox，须事务性 UoW。
     /// </summary>
     [HttpPost("/order/update")]
+    [UnitOfWork(IsTransactional = true, IsolationLevel = IsolationLevel.ReadCommitted)]
     public async Task<OrderOutput> UpdateOrderDetailAsync(OrderUpdateInput input)
     {
         var order = await GetOrderOrThrowAsync(input.Id);