diff --git a/.travis.yml b/.travis.yml
index 1843cf3..3ab9d34 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: csharp
 solution: JT1078.sln
-dotnet: 3.0.100
+dotnet: 3.1.100
 os: linux
 mono: none
 dist: trusty2
diff --git a/src/JT808.Protocol.Extensions.JT1078.Test/JT808.Protocol.Extensions.JT1078.Test.csproj b/src/JT808.Protocol.Extensions.JT1078.Test/JT808.Protocol.Extensions.JT1078.Test.csproj
index b261e19..ca4ef0c 100644
--- a/src/JT808.Protocol.Extensions.JT1078.Test/JT808.Protocol.Extensions.JT1078.Test.csproj
+++ b/src/JT808.Protocol.Extensions.JT1078.Test/JT808.Protocol.Extensions.JT1078.Test.csproj
@@ -1,15 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging" Version="3.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.3.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="3.1.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
       <PrivateAssets>all</PrivateAssets>
diff --git a/src/JT808.Protocol.Extensions.JT1078/JT808.Protocol.Extensions.JT1078.csproj b/src/JT808.Protocol.Extensions.JT1078/JT808.Protocol.Extensions.JT1078.csproj
index ae1486f..7bb6b4b 100644
--- a/src/JT808.Protocol.Extensions.JT1078/JT808.Protocol.Extensions.JT1078.csproj
+++ b/src/JT808.Protocol.Extensions.JT1078/JT808.Protocol.Extensions.JT1078.csproj
@@ -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>false</GeneratePackageOnBuild>
-    <Version>2.2.0</Version>
+    <Version>2.2.1</Version>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
   </PropertyGroup>
 
@@ -28,7 +28,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="JT808" Version="2.2.0" />
+    <PackageReference Include="JT808" Version="2.2.1" />
   </ItemGroup>
 
   <ItemGroup>