diff --git a/Netch/Controllers/UpdateChecker.cs b/Netch/Controllers/UpdateChecker.cs
index 4a48994c..930e213f 100644
--- a/Netch/Controllers/UpdateChecker.cs
+++ b/Netch/Controllers/UpdateChecker.cs
@@ -2,11 +2,11 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Net;
+using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Netch.Models.GitHubRelease;
 using Netch.Utils;
-using Newtonsoft.Json;
 using static Netch.Updater.Updater;
 
 namespace Netch.Controllers
@@ -43,7 +43,7 @@ namespace Netch.Controllers
 
                 var json = await WebUtil.DownloadStringAsync(WebUtil.CreateRequest(url));
 
-                var releases = JsonConvert.DeserializeObject<List<Release>>(json);
+                var releases = JsonSerializer.Deserialize<List<Release>>(json);
                 LatestRelease = VersionUtil.GetLatestRelease(releases, isPreRelease);
                 LatestVersionNumber = LatestRelease.tag_name;
                 LatestVersionUrl = LatestRelease.html_url;
diff --git a/Netch/Forms/MainForm.cs b/Netch/Forms/MainForm.cs
index d726cda3..c353671d 100644
--- a/Netch/Forms/MainForm.cs
+++ b/Netch/Forms/MainForm.cs
@@ -729,14 +729,16 @@ namespace Netch.Forms
         private void EditServerPictureBox_Click(object sender, EventArgs e)
         {
             // 当前ServerComboBox中至少有一项
-            if (ServerComboBox.SelectedIndex == -1)
+            if (!(ServerComboBox.SelectedItem is Server server))
             {
                 MessageBoxX.Show(i18N.Translate("Please select a server first"));
                 return;
             }
 
+            if (!server.Valid())
+                return;
+
             Hide();
-            var server = Global.Settings.Server[ServerComboBox.SelectedIndex];
             ServerHelper.GetUtilByTypeName(server.Type).Edit(server);
             LoadServers();
             Configuration.Save();
@@ -774,16 +776,18 @@ namespace Netch.Forms
         private void CopyLinkPictureBox_Click(object sender, EventArgs e)
         {
             // 当前ServerComboBox中至少有一项
-            if (ServerComboBox.SelectedIndex == -1)
+            if (!(ServerComboBox.SelectedItem is Server server))
             {
                 MessageBoxX.Show(i18N.Translate("Please select a server first"));
                 return;
             }
 
+            if (!server.Valid())
+                return;
+
             try
             {
                 //听说巨硬BUG经常会炸，所以Catch一下 :D
-                var server = (Server) ServerComboBox.SelectedItem;
                 string text;
                 if (ModifierKeys == Keys.Control)
                     text = ShareLink.GetNetchLink(server);
diff --git a/Netch/Global.cs b/Netch/Global.cs
index 172e25a8..6cee91ed 100644
--- a/Netch/Global.cs
+++ b/Netch/Global.cs
@@ -4,6 +4,8 @@ using System.Linq;
 using System.Net;
 using System.Net.NetworkInformation;
 using System.Net.Sockets;
+using System.Text.Encodings.Web;
+using System.Text.Json;
 using System.Threading;
 using System.Windows.Forms;
 using WindowsJobAPI;
@@ -114,5 +116,12 @@ namespace Netch
         ///     主窗体的静态实例
         /// </summary>
         public static MainForm MainForm => _mainForm ??= new MainForm();
+
+        public static JsonSerializerOptions NewDefaultJsonSerializerOptions => new()
+        {
+            WriteIndented = true,
+            IgnoreNullValues = true,
+            Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
+        };
     }
 }
\ No newline at end of file
diff --git a/Netch/Models/IServerUtil.cs b/Netch/Models/IServerUtil.cs
index 32c36a6e..feb05b90 100644
--- a/Netch/Models/IServerUtil.cs
+++ b/Netch/Models/IServerUtil.cs
@@ -1,6 +1,6 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using Netch.Controllers;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Models
 {
@@ -28,7 +28,7 @@ namespace Netch.Models
         /// </summary>
         string[] UriScheme { get; }
 
-        Server ParseJObject(in JObject j);
+        public abstract Type ServerType { get; }
 
         public void Edit(Server s);
 
diff --git a/Netch/Netch.csproj b/Netch/Netch.csproj
index 784c0b96..1cef7551 100644
--- a/Netch/Netch.csproj
+++ b/Netch/Netch.csproj
@@ -43,9 +43,9 @@
         <PackageReference Include="MaxMind.GeoIP2" Version="4.0.1" />
         <PackageReference Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="2.0.66" GeneratePathProperty="true" />
         <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
-        <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
         <PackageReference Include="System.Collections.Immutable" Version="5.0.0" />
         <PackageReference Include="System.Reflection.Metadata" Version="5.0.0" />
+        <PackageReference Include="System.Text.Json" Version="5.0.1"/>
         <PackageReference Include="TaskScheduler" Version="2.9.1" />
         <PackageReference Include="Vanara.PInvoke.IpHlpApi" Version="3.3.4" />
         <PackageReference Include="Microsoft-WindowsAPICodePack-Shell" Version="1.1.4" />
diff --git a/Netch/Servers/Shadowsocks/SSUtil.cs b/Netch/Servers/Shadowsocks/SSUtil.cs
index 88878238..5526e73c 100644
--- a/Netch/Servers/Shadowsocks/SSUtil.cs
+++ b/Netch/Servers/Shadowsocks/SSUtil.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Web;
 using Netch.Controllers;
@@ -8,8 +9,6 @@ using Netch.Models;
 using Netch.Servers.Shadowsocks.Form;
 using Netch.Servers.Shadowsocks.Models.SSD;
 using Netch.Utils;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Servers.Shadowsocks
 {
@@ -25,10 +24,7 @@ namespace Netch.Servers.Shadowsocks
 
         public string[] UriScheme { get; } = {"ss", "ssd"};
 
-        public Server ParseJObject(in JObject j)
-        {
-            return j.ToObject<Shadowsocks>();
-        }
+        public Type ServerType { get; } = typeof(Shadowsocks);
 
         public void Edit(Server s)
         {
@@ -80,7 +76,7 @@ namespace Netch.Servers.Shadowsocks
 
         public IEnumerable<Server> ParseSsdUri(string s)
         {
-            var json = JsonConvert.DeserializeObject<Main>(ShareLink.URLSafeBase64Decode(s.Substring(6)));
+            var json = JsonSerializer.Deserialize<Main>(ShareLink.URLSafeBase64Decode(s.Substring(6)));
 
             return json.servers.Select(server => new Shadowsocks
                 {
diff --git a/Netch/Servers/ShadowsocksR/SSRUtil.cs b/Netch/Servers/ShadowsocksR/SSRUtil.cs
index 6bd40fcb..dc1e83a5 100644
--- a/Netch/Servers/ShadowsocksR/SSRUtil.cs
+++ b/Netch/Servers/ShadowsocksR/SSRUtil.cs
@@ -6,7 +6,6 @@ using Netch.Models;
 using Netch.Servers.Shadowsocks;
 using Netch.Servers.ShadowsocksR.Form;
 using Netch.Utils;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Servers.ShadowsocksR
 {
@@ -22,10 +21,7 @@ namespace Netch.Servers.ShadowsocksR
 
         public string[] UriScheme { get; } = {"ssr"};
 
-        public Server ParseJObject(in JObject j)
-        {
-            return j.ToObject<ShadowsocksR>();
-        }
+        public Type ServerType { get; } = typeof(ShadowsocksR);
 
         public void Edit(Server s)
         {
diff --git a/Netch/Servers/Socks5/S5Util.cs b/Netch/Servers/Socks5/S5Util.cs
index 3d2560b4..7440130b 100644
--- a/Netch/Servers/Socks5/S5Util.cs
+++ b/Netch/Servers/Socks5/S5Util.cs
@@ -4,7 +4,6 @@ using System.Linq;
 using Netch.Controllers;
 using Netch.Models;
 using Netch.Servers.Socks5.Form;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Servers.Socks5
 {
@@ -20,10 +19,7 @@ namespace Netch.Servers.Socks5
 
         public string[] UriScheme { get; } = { };
 
-        public Server ParseJObject(in JObject j)
-        {
-            return j.ToObject<Socks5>();
-        }
+        public Type ServerType { get; } = typeof(Socks5);
 
         public void Edit(Server s)
         {
diff --git a/Netch/Servers/Trojan/TrojanController.cs b/Netch/Servers/Trojan/TrojanController.cs
index f7c225e4..f999c666 100644
--- a/Netch/Servers/Trojan/TrojanController.cs
+++ b/Netch/Servers/Trojan/TrojanController.cs
@@ -1,9 +1,9 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Text.Json;
 using Netch.Controllers;
 using Netch.Models;
 using Netch.Servers.Trojan.Models;
-using Newtonsoft.Json;
 
 namespace Netch.Servers.Trojan
 {
@@ -39,13 +39,7 @@ namespace Netch.Servers.Trojan
             if (!string.IsNullOrWhiteSpace(server.Host))
                 trojanConfig.ssl.sni = server.Host;
 
-            File.WriteAllText("data\\last.json",
-                JsonConvert.SerializeObject(trojanConfig,
-                    Formatting.Indented,
-                    new JsonSerializerSettings
-                    {
-                        NullValueHandling = NullValueHandling.Ignore
-                    }));
+            JsonSerializer.SerializeAsync(File.Create("data\\last.json"), trojanConfig, Global.NewDefaultJsonSerializerOptions);
 
             StartInstanceAuto("-c ..\\data\\last.json");
         }
diff --git a/Netch/Servers/Trojan/TrojanUtil.cs b/Netch/Servers/Trojan/TrojanUtil.cs
index 179b172a..a047075c 100644
--- a/Netch/Servers/Trojan/TrojanUtil.cs
+++ b/Netch/Servers/Trojan/TrojanUtil.cs
@@ -5,7 +5,6 @@ using System.Web;
 using Netch.Controllers;
 using Netch.Models;
 using Netch.Servers.Trojan.Form;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Servers.Trojan
 {
@@ -21,10 +20,7 @@ namespace Netch.Servers.Trojan
 
         public string[] UriScheme { get; } = {"trojan"};
 
-        public Server ParseJObject(in JObject j)
-        {
-            return j.ToObject<Trojan>();
-        }
+        public Type ServerType { get; } = typeof(Trojan);
 
         public void Edit(Server s)
         {
diff --git a/Netch/Servers/V2ray/Utils/V2rayConfigUtils.cs b/Netch/Servers/V2ray/Utils/V2rayConfigUtils.cs
index c2386a45..015dde6a 100644
--- a/Netch/Servers/V2ray/Utils/V2rayConfigUtils.cs
+++ b/Netch/Servers/V2ray/Utils/V2rayConfigUtils.cs
@@ -1,8 +1,8 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json;
 using Netch.Models;
 using Netch.Servers.V2ray.Models;
-using Newtonsoft.Json;
 using V2rayConfig = Netch.Servers.V2ray.Models.V2rayConfig;
 
 namespace Netch.Servers.V2ray.Utils
@@ -19,9 +19,7 @@ namespace Netch.Servers.V2ray.Utils
 
             outbound(server, mode, ref v2rayConfig);
 
-            return JsonConvert.SerializeObject(v2rayConfig,
-                Formatting.Indented,
-                new JsonSerializerSettings {NullValueHandling = NullValueHandling.Ignore});
+            return JsonSerializer.Serialize(v2rayConfig, Global.NewDefaultJsonSerializerOptions);
         }
 
         private static void inbound(Server server, ref V2rayConfig v2rayConfig)
diff --git a/Netch/Servers/VLESS/VLESSUtil.cs b/Netch/Servers/VLESS/VLESSUtil.cs
index 3a20447b..aa746de3 100644
--- a/Netch/Servers/VLESS/VLESSUtil.cs
+++ b/Netch/Servers/VLESS/VLESSUtil.cs
@@ -1,8 +1,8 @@
+using System;
 using System.Collections.Generic;
 using Netch.Controllers;
 using Netch.Models;
 using Netch.Servers.V2ray;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Servers.VLESS
 {
@@ -18,10 +18,7 @@ namespace Netch.Servers.VLESS
 
         public string[] UriScheme { get; } = {"vless"};
 
-        public Server ParseJObject(in JObject j)
-        {
-            return j.ToObject<VLESS>();
-        }
+        public Type ServerType { get; } = typeof(VLESS);
 
         public void Edit(Server s)
         {
diff --git a/Netch/Servers/VMess/VMessUtil.cs b/Netch/Servers/VMess/VMessUtil.cs
index 4449881d..8bde4c4b 100644
--- a/Netch/Servers/VMess/VMessUtil.cs
+++ b/Netch/Servers/VMess/VMessUtil.cs
@@ -1,12 +1,13 @@
+using System;
 using System.Collections.Generic;
+using System.Text.Encodings.Web;
+using System.Text.Json;
 using Netch.Controllers;
 using Netch.Models;
 using Netch.Servers.V2ray;
 using Netch.Servers.V2ray.Models;
 using Netch.Servers.VMess.Form;
 using Netch.Utils;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Servers.VMess
 {
@@ -22,10 +23,7 @@ namespace Netch.Servers.VMess
 
         public string[] UriScheme { get; } = {"vmess"};
 
-        public Server ParseJObject(in JObject j)
-        {
-            return j.ToObject<VMess>();
-        }
+        public Type ServerType { get; } = typeof(VMess);
 
         public void Edit(Server s)
         {
@@ -43,20 +41,24 @@ namespace Netch.Servers.VMess
             {
                 var server = (VMess) s;
 
-                var vmessJson = JsonConvert.SerializeObject(new
-                {
-                    v = "2",
-                    ps = server.Remark,
-                    add = server.Hostname,
-                    port = server.Port,
-                    id = server.UserID,
-                    aid = server.AlterID,
-                    net = server.TransferProtocol,
-                    type = server.FakeType,
-                    host = server.Host,
-                    path = server.Path,
-                    tls = server.TLSSecureType
-                });
+                var vmessJson = JsonSerializer.Serialize(new V2rayNSharing
+                    {
+                        v = "2",
+                        ps = server.Remark,
+                        add = server.Hostname,
+                        port = server.Port.ToString(),
+                        id = server.UserID,
+                        aid = server.AlterID.ToString(),
+                        net = server.TransferProtocol,
+                        type = server.FakeType,
+                        host = server.Host,
+                        path = server.Path,
+                        tls = server.TLSSecureType
+                    },
+                    new JsonSerializerOptions
+                    {
+                        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
+                    });
 
                 return "vmess://" + ShareLink.URLSafeBase64Encode(vmessJson);
             }
@@ -76,7 +78,7 @@ namespace Netch.Servers.VMess
             V2rayNSharing vmess;
             try
             {
-                vmess = JsonConvert.DeserializeObject<V2rayNSharing>(ShareLink.URLSafeBase64Decode(text.Substring(8)));
+                vmess = JsonSerializer.Deserialize<V2rayNSharing>(ShareLink.URLSafeBase64Decode(text.Substring(8)));
             }
             catch
             {
diff --git a/Netch/Utils/Configuration.cs b/Netch/Utils/Configuration.cs
index 280dfc65..fb83c4ab 100644
--- a/Netch/Utils/Configuration.cs
+++ b/Netch/Utils/Configuration.cs
@@ -1,8 +1,8 @@
-using System.IO;
+using System;
+using System.IO;
 using System.Linq;
+using System.Text.Json;
 using Netch.Models;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Utils
 {
@@ -23,30 +23,9 @@ namespace Netch.Utils
         /// </summary>
         public static void Load()
         {
-            if (Directory.Exists(DATA_DIR) && File.Exists(SETTINGS_JSON))
+            if (File.Exists(SETTINGS_JSON))
             {
-                try
-                {
-                    var settingJObject = (JObject) JsonConvert.DeserializeObject(File.ReadAllText(SETTINGS_JSON))!;
-                    Global.Settings = settingJObject?.ToObject<Setting>() ?? new Setting();
-                    Global.Settings.Server.Clear();
-
-                    if (settingJObject?["Server"] != null)
-                        foreach (JObject server in settingJObject["Server"]!)
-                        {
-                            var serverResult = ServerHelper.ParseJObject(server);
-                            if (serverResult != null)
-                                Global.Settings.Server.Add(serverResult);
-                        }
-
-                    if (settingJObject?["Profiles"] != null && Global.Settings.Profiles.Any() &&
-                        settingJObject["Profiles"]!.First()?["Index"] == null)
-                        foreach (var profile in Global.Settings.Profiles)
-                            profile.Index = Global.Settings.Profiles.IndexOf(profile);
-                }
-                catch (JsonException)
-                {
-                }
+                Global.Settings = ParseSetting(File.ReadAllText(SETTINGS_JSON));
             }
             else
             {
@@ -58,6 +37,34 @@ namespace Netch.Utils
             }
         }
 
+        public static Setting ParseSetting(string text)
+        {
+            try
+            {
+                var jsonSerializerOptions = Global.NewDefaultJsonSerializerOptions;
+                jsonSerializerOptions.Converters.Add(new ServerConverterWithTypeDiscriminator());
+                var settings = JsonSerializer.Deserialize<Setting>(text, jsonSerializerOptions)!;
+
+                #region Check Profile
+
+                foreach (var profile in settings.Profiles.Where(p => p.ServerRemark == string.Empty || p.ModeRemark == string.Empty)!)
+                    settings.Profiles.Remove(profile);
+
+                if (settings.Profiles.Any(p => settings.Profiles.Any(p1 => p1 != p && p1.Index == p.Index)))
+                    for (var i = 0; i < settings.Profiles.Count; i++)
+                        settings.Profiles[i].Index = i;
+
+                #endregion
+
+                return settings;
+            }
+            catch (Exception e)
+            {
+                Logging.Error(e.ToString());
+                return new Setting();
+            }
+        }
+
         /// <summary>
         ///     保存配置
         /// </summary>
@@ -66,13 +73,7 @@ namespace Netch.Utils
             if (!Directory.Exists(DATA_DIR))
                 Directory.CreateDirectory(DATA_DIR);
 
-            File.WriteAllText(SETTINGS_JSON,
-                JsonConvert.SerializeObject(Global.Settings,
-                    Formatting.Indented,
-                    new JsonSerializerSettings
-                    {
-                        NullValueHandling = NullValueHandling.Ignore
-                    }));
+            File.WriteAllBytes(SETTINGS_JSON, JsonSerializer.SerializeToUtf8Bytes(Global.Settings, Global.NewDefaultJsonSerializerOptions));
         }
     }
 }
\ No newline at end of file
diff --git a/Netch/Utils/ServerConverterWithTypeDiscriminator.cs b/Netch/Utils/ServerConverterWithTypeDiscriminator.cs
new file mode 100644
index 00000000..514db08e
--- /dev/null
+++ b/Netch/Utils/ServerConverterWithTypeDiscriminator.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Netch.Models;
+
+namespace Netch.Utils
+{
+    public class ServerConverterWithTypeDiscriminator : JsonConverter<Server>
+    {
+        public override bool CanConvert(Type typeToConvert) => typeToConvert == typeof(Server);
+
+        public override Server Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            var jsonElement = JsonSerializer.Deserialize<JsonElement>(ref reader)!;
+
+            try
+            {
+                var type = ServerHelper.GetTypeByTypeName(jsonElement.GetProperty("Type").GetString()!);
+                return (Server) JsonSerializer.Deserialize(jsonElement.GetRawText(), type)!;
+            }
+            catch
+            {
+                return JsonSerializer.Deserialize<Server>(jsonElement.GetRawText(), new JsonSerializerOptions())!;
+            }
+        }
+
+        public override void Write(Utf8JsonWriter writer, Server value, JsonSerializerOptions options)
+        {
+            JsonSerializer.Serialize(writer, value, options);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Netch/Utils/ServerHelper.cs b/Netch/Utils/ServerHelper.cs
index 86add0c1..6973bef9 100644
--- a/Netch/Utils/ServerHelper.cs
+++ b/Netch/Utils/ServerHelper.cs
@@ -5,7 +5,6 @@ using System.Reflection;
 using System.Threading.Tasks;
 using System.Timers;
 using Netch.Models;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Utils
 {
@@ -20,6 +19,11 @@ namespace Netch.Utils
             ServerUtils = serversUtilsTypes.Select(t => (IServerUtil) Activator.CreateInstance(t)).OrderBy(util => util.Priority);
         }
 
+        public static Type GetTypeByTypeName(string typeName)
+        {
+            return ServerUtils.Single(i => i.TypeName.Equals(typeName)).ServerType;
+        }
+
         #region Delay
 
         public static class DelayTestHelper
@@ -98,22 +102,6 @@ namespace Netch.Utils
 
         public static readonly IEnumerable<IServerUtil> ServerUtils;
 
-        public static Server? ParseJObject(JObject o)
-        {
-            try
-            {
-                var type = (string) o["Type"]!;
-                var handle = GetUtilByTypeName(type);
-
-                return handle.ParseJObject(o);
-            }
-            catch (Exception e)
-            {
-                Console.WriteLine($"读取服务器错误: {e}\n错误项: {o}");
-                return null;
-            }
-        }
-
         public static IServerUtil GetUtilByTypeName(string typeName)
         {
             if (string.IsNullOrEmpty(typeName))
diff --git a/Netch/Utils/ShareLink.cs b/Netch/Utils/ShareLink.cs
index d7ff964f..4c160275 100644
--- a/Netch/Utils/ShareLink.cs
+++ b/Netch/Utils/ShareLink.cs
@@ -3,11 +3,10 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Text.Json;
 using Netch.Models;
 using Netch.Servers.Shadowsocks;
 using Netch.Servers.Shadowsocks.Models;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 
 namespace Netch.Utils
 {
@@ -33,7 +32,7 @@ namespace Netch.Utils
 
             try
             {
-                list.AddRange(JsonConvert.DeserializeObject<List<ShadowsocksConfig>>(text)
+                list.AddRange(JsonSerializer.Deserialize<List<ShadowsocksConfig>>(text)
                     .Select(server => new Shadowsocks
                     {
                         Hostname = server.server,
@@ -45,7 +44,7 @@ namespace Netch.Utils
                         PluginOption = server.plugin_opts
                     }));
             }
-            catch (JsonReaderException)
+            catch (JsonException)
             {
                 foreach (var line in text.GetLines())
                     list.AddRange(ParseUri(line));
@@ -105,21 +104,28 @@ namespace Netch.Utils
 
         private static Server ParseNetchUri(string text)
         {
-            text = text.Substring(8);
+            text = URLSafeBase64Decode(text.Substring(8));
 
-            var jObject = (JObject) JsonConvert.DeserializeObject(URLSafeBase64Decode(text))!;
+            var NetchLink = JsonSerializer.Deserialize<JsonElement>(text);
 
-            var type = (string) jObject["Type"]!;
-            var s = ServerHelper.GetUtilByTypeName(type).ParseJObject(jObject);
-            return ServerHelper.GetUtilByTypeName(s.Type).CheckServer(s) ? s : throw new FormatException();
+            if (string.IsNullOrEmpty(NetchLink.GetProperty("Hostname").GetString()))
+                throw new FormatException();
+
+            if (!ushort.TryParse(NetchLink.GetProperty("Port").GetString(), out _))
+                throw new FormatException();
+
+            return JsonSerializer.Deserialize<Server>(text,
+                new JsonSerializerOptions
+                {
+                    Converters = {new ServerConverterWithTypeDiscriminator()}
+                })!;
         }
 
         public static string GetNetchLink(Server s)
         {
-            var server = (Server) s.Clone();
-            return "Netch://" +
-                   URLSafeBase64Encode(JsonConvert.SerializeObject(server,
-                       new JsonSerializerSettings {NullValueHandling = NullValueHandling.Ignore}));
+            var jsonSerializerOptions = Global.NewDefaultJsonSerializerOptions;
+            jsonSerializerOptions.WriteIndented = false;
+            return "Netch://" + URLSafeBase64Encode(JsonSerializer.Serialize(s, jsonSerializerOptions));
         }
 
         #region Utils
diff --git a/Netch/Utils/i18N.cs b/Netch/Utils/i18N.cs
index dd053bd6..1ad8e74a 100644
--- a/Netch/Utils/i18N.cs
+++ b/Netch/Utils/i18N.cs
@@ -4,9 +4,9 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Text.Json;
 using System.Windows.Forms;
 using Netch.Properties;
-using Newtonsoft.Json;
 
 namespace Netch.Utils
 {
@@ -57,7 +57,7 @@ namespace Netch.Utils
                     break;
             }
 
-            var dictionary = JsonConvert.DeserializeObject<Dictionary<string, string>>(text);
+            var dictionary = JsonSerializer.Deserialize<Dictionary<string, string>>(text);
 
             if (!dictionary.Any())
             {
diff --git a/UnitTest/TestBase.cs b/UnitTest/TestBase.cs
index d0a34405..bcf2da08 100644
--- a/UnitTest/TestBase.cs
+++ b/UnitTest/TestBase.cs
@@ -1,14 +1,14 @@
-using Netch;
-using Newtonsoft.Json;
+using System.Text.Json;
+using Netch;
 
 namespace UnitTest
 {
     public class TestBase
     {
-        private readonly JsonSerializerSettings _serializerSettings = new()
+        private readonly JsonSerializerOptions _serializerSettings = new()
         {
-            Formatting = Formatting.Indented,
-            NullValueHandling = NullValueHandling.Ignore
+            WriteIndented = true,
+            IgnoreNullValues = true
         };
 
         protected TestBase()
@@ -20,7 +20,7 @@ namespace UnitTest
 
         protected string JsonSerializerFormatted(object o)
         {
-            return JsonConvert.SerializeObject(o, _serializerSettings);
+            return JsonSerializer.Serialize(o, _serializerSettings);
         }
     }
 }
\ No newline at end of file
diff --git a/UnitTest/UnitTest.csproj b/UnitTest/UnitTest.csproj
index de79d4e1..0e7d9245 100644
--- a/UnitTest/UnitTest.csproj
+++ b/UnitTest/UnitTest.csproj
@@ -5,6 +5,7 @@
         <Platforms>x64</Platforms>
         <UseWindowsForms>true</UseWindowsForms>
         <LangVersion>latest</LangVersion>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
 
     <ItemGroup>
@@ -24,6 +25,7 @@
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1"/>
         <PackageReference Include="MSTest.TestAdapter" Version="2.1.2"/>
         <PackageReference Include="MSTest.TestFramework" Version="2.1.2"/>
+        <PackageReference Include="System.Text.Json" Version="5.0.1"/>
     </ItemGroup>
 
 </Project>