diff --git a/src/JT809.Protocol.Extensions.JT1078/JT809.Protocol.Extensions.JT1078.csproj b/src/JT809.Protocol.Extensions.JT1078/JT809.Protocol.Extensions.JT1078.csproj
index f283d7f..9c2fb8b 100644
--- a/src/JT809.Protocol.Extensions.JT1078/JT809.Protocol.Extensions.JT1078.csproj
+++ b/src/JT809.Protocol.Extensions.JT1078/JT809.Protocol.Extensions.JT1078.csproj
@@ -7,7 +7,7 @@
     <Authors>SmallChi(Koike)</Authors>
     <PackageId>JT809.Protocol.Extensions.JT1078</PackageId>
     <Product>JT809.Protocol.Extensions.JT1078</Product>
-    <Description>JT1078协议、GB1078协议、道路运输车辆卫星定位系统-视频通讯协议</Description>
+    <Description>基于JT809协议、GB809协议扩展的视频消息协议</Description>
     <PackageReleaseNotes>基于JT809协议、GB809协议扩展的视频消息协议</PackageReleaseNotes>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <RepositoryUrl>https://github.com/SmallChi/JT1078</RepositoryUrl>
@@ -15,7 +15,7 @@
     <licenseUrl>https://github.com/SmallChi/JT1078/blob/master/LICENSE</licenseUrl>
     <license>https://github.com/SmallChi/JT1078/blob/master/LICENSE</license>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <Version>2.1.4-preview1</Version>
+    <Version>2.1.4-preview4</Version>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <FileVersion>2.1.4.0</FileVersion>
   </PropertyGroup>
@@ -36,7 +36,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="JT809" Version="2.1.4-preview1" />
+    <PackageReference Include="JT809" Version="2.1.4-preview4" />
   </ItemGroup>
 
 </Project>
diff --git a/src/JT809.Protocol.Extensions.JT1078/MessageBody/JT809_JT1078_0x1900_0x1901.cs b/src/JT809.Protocol.Extensions.JT1078/MessageBody/JT809_JT1078_0x1900_0x1901.cs
index f364c53..c7c9148 100644
--- a/src/JT809.Protocol.Extensions.JT1078/MessageBody/JT809_JT1078_0x1900_0x1901.cs
+++ b/src/JT809.Protocol.Extensions.JT1078/MessageBody/JT809_JT1078_0x1900_0x1901.cs
@@ -33,7 +33,6 @@ namespace JT809.Protocol.Extensions.JT1078.MessageBody
             if (value.ItemNum > 0)
             {
                 writer.WriteStartArray("资源目录项列表");
-                List<JT809_JT1078_0x1900_Record> jT808_JT1078_0x1900_0x1901_RecordList = new List<JT809_JT1078_0x1900_Record>();
                 var formatter = config.GetMessagePackFormatter<JT809_JT1078_0x1900_Record>();
                 for (int i = 0; i < value.ItemNum; i++)
                 {