diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs
index f9012371..e43b4b0b 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs
@@ -101,7 +101,7 @@ namespace SKIT.FlurlHttpClient.Wechat.Work
 
         /// <summary>
         /// <para>异步调用 [POST] /cgi-bin/externalcontact/batch/get_by_user 接口。</para>
-        /// <para>REF: https://open.work.weixin.qq.com/api/doc/90000/90135/92115 </para>
+        /// <para>REF: https://open.work.weixin.qq.com/api/doc/90000/90135/92994 </para>
         /// <para>REF: https://open.work.weixin.qq.com/api/doc/90001/90143/93010 </para>
         /// </summary>
         /// <param name="client"></param>
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/CgibinExternalContactBatchGetByUserRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/CgibinExternalContactBatchGetByUserRequest.cs
index 2b61d816..f138d9a1 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/CgibinExternalContactBatchGetByUserRequest.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/CgibinExternalContactBatchGetByUserRequest.cs
@@ -9,11 +9,11 @@ namespace SKIT.FlurlHttpClient.Wechat.Work.Models
     public class CgibinExternalContactBatchGetByUserRequest : WechatWorkRequest
     {
         /// <summary>
-        /// 获取或设置成员账号。
+        /// 获取或设置成员账号列表。
         /// </summary>
         [Newtonsoft.Json.JsonProperty("userid_list")]
         [System.Text.Json.Serialization.JsonPropertyName("userid_list")]
-        public IList<string>? UserIdList { get; set; }
+        public IList<string> UserIdList { get; set; } = new List<string>();
 
         /// <summary>
         /// 获取或设置翻页标记。
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/SKIT.FlurlHttpClient.Wechat.Work.csproj b/src/SKIT.FlurlHttpClient.Wechat.Work/SKIT.FlurlHttpClient.Wechat.Work.csproj
index 9fbcb721..53aed5e5 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/SKIT.FlurlHttpClient.Wechat.Work.csproj
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/SKIT.FlurlHttpClient.Wechat.Work.csproj
@@ -12,7 +12,7 @@
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
         <PackageProjectUrl>https://github.com/fudiwei/DotNetCore.SKIT.FlurlHttpClient.Wechat</PackageProjectUrl>
         <PackageTags>Flurl.Http Wechat Weixin MicroMessage WechatWork WeixinWork Wxwork 微信 企业微信 企业号 微信企业号</PackageTags>
-        <Version>1.3.2</Version>
+        <Version>1.3.3</Version>
         <Description>基于 Flurl.Http 的企业微信 API 客户端，支持企业内部开发、第三方应用开发、智慧硬件开发模式，支持基础服务、通讯录管理、客户联系、身份验证、应用管理、素材管理、设备管理、消息推送、OA、效率工具、企业互联、电子发票、家校沟通、家校应用、政民沟通等功能。</Description>
         <Authors>Fu Diwei</Authors>
         <RepositoryType>git</RepositoryType>