diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.cs
index c18c2b0b..dc3943ac 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.cs
@@ -88,6 +88,20 @@ namespace SKIT.FlurlHttpClient.Wechat.Work.Models
                 [System.Text.Json.Serialization.JsonPropertyName("file_info")]
                 public string? FileInfo { get; set; }
 
+                /// <summary>
+                /// 获取或设置文件大小（单位：字节）。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("file_size")]
+                [System.Text.Json.Serialization.JsonPropertyName("file_size")]
+                public int? FileSize { get; set; }
+
+                /// <summary>
+                /// 获取或设置文文件的 MD5 值。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("file_md5")]
+                [System.Text.Json.Serialization.JsonPropertyName("file_md5")]
+                public string? FileMd5 { get; set; }
+
                 /// <summary>
                 /// 获取或设置申请人姓名。
                 /// </summary>
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.json
index d713a7c3..7855003c 100644
--- a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.json
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinSecurity/CgibinSecurityGetFileOperateRecordResponse.json
@@ -11,7 +11,9 @@
                 "type": 101,
                 "source": 401
             },
-            "file_info": "1234567890.jpg"
+            "file_info": "1234567890.jpg",
+            "file_size": 405842,
+            "file_md5": "gmgi32jginniboamgoge"
         },
         {
             "time": 16666666666,