diff --git a/build.bat b/build.bat
new file mode 100644
index 00000000..1eb1ea34
--- /dev/null
+++ b/build.bat
@@ -0,0 +1,5 @@
+cd src
+rmdir /s /q bin
+rmdir /s /q obj
+dotnet publish -c Release -r win-x64 -p:PublishSingleFile=true --self-contained false
+cd ..
\ No newline at end of file
diff --git a/src/App.xaml.cs b/src/App.xaml.cs
index 57823bf4..76c2c926 100644
--- a/src/App.xaml.cs
+++ b/src/App.xaml.cs
@@ -1,10 +1,10 @@
 using Microsoft.Win32;
-using Newtonsoft.Json;
 using System;
 using System.IO;
 using System.Net;
 using System.Reflection;
 using System.Text;
+using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Windows;
@@ -79,7 +79,7 @@ namespace SourceGit {
             var dir = Path.GetDirectoryName(settingFile);
             if (!Directory.Exists(dir)) Directory.CreateDirectory(dir);
 
-            var data = JsonConvert.SerializeObject(Setting, Formatting.Indented);
+            var data = JsonSerializer.Serialize(Setting, new JsonSerializerOptions() { WriteIndented = true });
             File.WriteAllText(settingFile, data);
         }
 
@@ -100,7 +100,7 @@ namespace SourceGit {
             if (!File.Exists(settingFile)) {
                 Setting = new Preference();
             } else {
-                Setting = JsonConvert.DeserializeObject<Preference>(File.ReadAllText(settingFile));
+                Setting = JsonSerializer.Deserialize<Preference>(File.ReadAllText(settingFile));
             }
 
             // Try auto configure git via registry.
@@ -196,7 +196,7 @@ namespace SourceGit {
             try {
                 var web = new WebClient() { Encoding = Encoding.UTF8 };
                 var raw = web.DownloadString("https://gitee.com/api/v5/repos/sourcegit/SourceGit/releases/latest");
-                var ver = JsonConvert.DeserializeObject<Git.Version>(raw);
+                var ver = JsonSerializer.Deserialize<Git.Version>(raw);
                 var cur = Assembly.GetExecutingAssembly().GetName().Version;
 
                 var matches = Regex.Match(ver.TagName, @"^v(\d+)\.(\d+).*");
diff --git a/src/Git/Repository.cs b/src/Git/Repository.cs
index 3280185f..9f1bd463 100644
--- a/src/Git/Repository.cs
+++ b/src/Git/Repository.cs
@@ -1,9 +1,9 @@
-using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Text;
+using System.Text.Json.Serialization;
 using System.Text.RegularExpressions;
 using System.Windows.Threading;
 
diff --git a/src/Git/Version.cs b/src/Git/Version.cs
index d3c670a8..02020610 100644
--- a/src/Git/Version.cs
+++ b/src/Git/Version.cs
@@ -1,5 +1,5 @@
-using Newtonsoft.Json;
 using System;
+using System.Text.Json.Serialization;
 
 namespace SourceGit.Git {
 
@@ -7,19 +7,19 @@ namespace SourceGit.Git {
     ///     Version information.
     /// </summary>
     public class Version {
-        [JsonProperty(PropertyName = "id")]
+        [JsonPropertyName("id")]
         public ulong Id { get; set; }
-        [JsonProperty(PropertyName = "tag_name")]
+        [JsonPropertyName("tag_name")]
         public string TagName { get; set; }
-        [JsonProperty(PropertyName = "target_commitish")]
+        [JsonPropertyName("target_commitish")]
         public string CommitSHA { get; set; }
-        [JsonProperty(PropertyName = "prerelease")]
+        [JsonPropertyName("prerelease")]
         public bool PreRelease { get; set; }
-        [JsonProperty(PropertyName = "name")]
+        [JsonPropertyName("name")]
         public string Name { get; set; }
-        [JsonProperty(PropertyName = "body")]
+        [JsonPropertyName("body")]
         public string Body { get; set; }
-        [JsonProperty(PropertyName = "created_at")]
+        [JsonPropertyName("created_at")]
         public DateTime CreatedAt { get; set; }
     }
 }
diff --git a/src/SourceGit.csproj b/src/SourceGit.csproj
index 0f6dba97..ae2b439a 100644
--- a/src/SourceGit.csproj
+++ b/src/SourceGit.csproj
@@ -1,6 +1,6 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net48</TargetFramework>
+        <TargetFramework>net5.0-windows</TargetFramework>
         <OutputType>WinExe</OutputType>
         <UseWPF>true</UseWPF>
         <ApplicationIcon>App.ico</ApplicationIcon>
@@ -18,7 +18,4 @@
         <DebugType>none</DebugType>
         <SatelliteResourceLanguages>none</SatelliteResourceLanguages>
     </PropertyGroup>
-    <ItemGroup>
-      <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    </ItemGroup>
 </Project>
\ No newline at end of file