diff --git a/v2rayN/v2rayUpgrade/App.config b/v2rayN/v2rayUpgrade/App.config
index 2d2a12d8..4bfa0056 100644
--- a/v2rayN/v2rayUpgrade/App.config
+++ b/v2rayN/v2rayUpgrade/App.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8"/>
     </startup>
 </configuration>
diff --git a/v2rayN/v2rayUpgrade/Properties/Resources.Designer.cs b/v2rayN/v2rayUpgrade/Properties/Resources.Designer.cs
index 5ad1ac66..f766ed10 100644
--- a/v2rayN/v2rayUpgrade/Properties/Resources.Designer.cs
+++ b/v2rayN/v2rayUpgrade/Properties/Resources.Designer.cs
@@ -19,7 +19,7 @@ namespace v2rayUpgrade.Properties {
     // 类通过类似于 ResGen 或 Visual Studio 的工具自动生成的。
     // 若要添加或移除成员，请编辑 .ResX 文件，然后重新运行 ResGen
     // (以 /str 作为命令选项)，或重新生成 VS 项目。
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "15.0.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "16.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     internal class Resources {
diff --git a/v2rayN/v2rayUpgrade/Properties/Settings.Designer.cs b/v2rayN/v2rayUpgrade/Properties/Settings.Designer.cs
index 5656cdc6..ecf1927f 100644
--- a/v2rayN/v2rayUpgrade/Properties/Settings.Designer.cs
+++ b/v2rayN/v2rayUpgrade/Properties/Settings.Designer.cs
@@ -12,7 +12,7 @@ namespace v2rayUpgrade.Properties {
     
     
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.9.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "16.3.0.0")]
     internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
         
         private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
diff --git a/v2rayN/v2rayUpgrade/v2rayUpgrade.csproj b/v2rayN/v2rayUpgrade/v2rayUpgrade.csproj
index 43372325..a619ae5e 100644
--- a/v2rayN/v2rayUpgrade/v2rayUpgrade.csproj
+++ b/v2rayN/v2rayUpgrade/v2rayUpgrade.csproj
@@ -8,7 +8,7 @@
     <OutputType>WinExe</OutputType>
     <RootNamespace>v2rayUpgrade</RootNamespace>
     <AssemblyName>v2rayUpgrade</AssemblyName>
-    <TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <Deterministic>true</Deterministic>