diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinMedia/CgibinMediaUploadImageResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinMedia/CgibinMediaUploadImageResponse.cs
index 3c732f1d0cabfb4725f43f871bb75d9abba491cd..5a3722a900630f0f61140b06d3836741085831c9 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinMedia/CgibinMediaUploadImageResponse.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinMedia/CgibinMediaUploadImageResponse.cs
@@ -1,10 +1,17 @@
-namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
 {
     /// <summary>
     /// <para>表示 [POST] /cgi-bin/media/uploadimg 接口的响应。</para>
     /// </summary>
     public class CgibinMediaUploadImageResponse : WechatApiResponse
     {
+        /// <summary>
+        /// 获取或设置永久Media-Id。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("MediaId")]
+        [System.Text.Json.Serialization.JsonPropertyName("MediaId")]
+        public string MediaId { get; set; } = default!;
+
         /// <summary>
         /// 获取或设置图片 URL。
         /// </summary>