diff --git a/src/BSLManager/Tools/SettingsManager.cs b/src/BSLManager/Tools/SettingsManager.cs
index 4763822..87daeba 100644
--- a/src/BSLManager/Tools/SettingsManager.cs
+++ b/src/BSLManager/Tools/SettingsManager.cs
@@ -1,8 +1,8 @@
 using System;
 using System.IO;
+using System.Text.Json;
 using System.Runtime.CompilerServices;
 using BirdsiteLive.Common.Settings;
-using Newtonsoft.Json;
 
 namespace BSLManager.Tools
 {
@@ -94,7 +94,7 @@ namespace BSLManager.Tools
                 if (!File.Exists(LocalFileName)) return null;
 
                 var jsonContent = File.ReadAllText(LocalFileName);
-                var content = JsonConvert.DeserializeObject<LocalSettingsData>(jsonContent);
+                var content = JsonSerializer.Deserialize<LocalSettingsData>(jsonContent);
                 return content;
             }
             catch (Exception)
@@ -105,7 +105,7 @@ namespace BSLManager.Tools
 
         private void SaveLocalSettings(LocalSettingsData data)
         {
-            var jsonContent = JsonConvert.SerializeObject(data);
+            var jsonContent = JsonSerializer.Serialize(data);
             File.WriteAllText(LocalFileName, jsonContent);
         }
     }
diff --git a/src/BirdsiteLive.ActivityPub/ApDeserializer.cs b/src/BirdsiteLive.ActivityPub/ApDeserializer.cs
index 169bbe6..ba60c29 100644
--- a/src/BirdsiteLive.ActivityPub/ApDeserializer.cs
+++ b/src/BirdsiteLive.ActivityPub/ApDeserializer.cs
@@ -1,6 +1,7 @@
 using System;
 using BirdsiteLive.ActivityPub.Models;
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
+using System.Text.Json;
 
 namespace BirdsiteLive.ActivityPub
 {
@@ -10,22 +11,21 @@ namespace BirdsiteLive.ActivityPub
         {
             try
             {
-                var activity = JsonConvert.DeserializeObject<Activity>(json);
+                var activity = JsonSerializer.Deserialize<Activity>(json);
                 switch (activity.type)
                 {
                     case "Follow":
-                        return JsonConvert.DeserializeObject<ActivityFollow>(json);
+                        return JsonSerializer.Deserialize<ActivityFollow>(json);
                     case "Undo":
-                        var a = JsonConvert.DeserializeObject<ActivityUndo>(json);
+                        var a = JsonSerializer.Deserialize<ActivityUndo>(json);
                         if(a.apObject.type == "Follow")
-                            return JsonConvert.DeserializeObject<ActivityUndoFollow>(json);
+                            return JsonSerializer.Deserialize<ActivityUndoFollow>(json);
                         break;
                     case "Delete":
-                        return JsonConvert.DeserializeObject<ActivityDelete>(json);
+                        return JsonSerializer.Deserialize<ActivityDelete>(json);
                     case "Accept":
-                        var accept = JsonConvert.DeserializeObject<ActivityAccept>(json);
-                        //var acceptType = JsonConvert.DeserializeObject<Activity>(accept.apObject);
-                        switch ((accept.apObject as dynamic).type.ToString())
+                        var accept = JsonSerializer.Deserialize<ActivityAccept>(json);
+                        switch (accept.apObject.type)
                         {
                             case "Follow":
                                 var acceptFollow = new ActivityAcceptFollow()
@@ -34,13 +34,13 @@ namespace BirdsiteLive.ActivityPub
                                     id = accept.id,
                                     actor = accept.actor,
                                     context = accept.context,
-                                    apObject = new ActivityFollow()
+                                    apObject = new NestedActivity()
                                     {
-                                        id = (accept.apObject as dynamic).id?.ToString(),
-                                        type = (accept.apObject as dynamic).type?.ToString(),
-                                        actor = (accept.apObject as dynamic).actor?.ToString(),
-                                        context = (accept.apObject as dynamic).context?.ToString(),
-                                        apObject = (accept.apObject as dynamic).@object?.ToString()
+                                        id = accept.apObject.id,
+                                        type = accept.apObject.type,
+                                        actor = accept.apObject.actor,
+                                        context = accept.apObject.context,
+                                        apObject = accept.apObject.apObject,
                                     }
                                 };
                                 return acceptFollow;
@@ -58,7 +58,7 @@ namespace BirdsiteLive.ActivityPub
 
         private class Ac : Activity
         {
-            [JsonProperty("object")]
+            [JsonPropertyName("object")]
             public Activity apObject { get; set; }
         }
     }
diff --git a/src/BirdsiteLive.ActivityPub/BirdsiteLive.ActivityPub.csproj b/src/BirdsiteLive.ActivityPub/BirdsiteLive.ActivityPub.csproj
index e046b1c..ec55c83 100644
--- a/src/BirdsiteLive.ActivityPub/BirdsiteLive.ActivityPub.csproj
+++ b/src/BirdsiteLive.ActivityPub/BirdsiteLive.ActivityPub.csproj
@@ -6,7 +6,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>
 
 </Project>
diff --git a/src/BirdsiteLive.ActivityPub/Converters/ContextArrayConverter.cs b/src/BirdsiteLive.ActivityPub/Converters/ContextArrayConverter.cs
deleted file mode 100644
index 21e139f..0000000
--- a/src/BirdsiteLive.ActivityPub/Converters/ContextArrayConverter.cs
+++ /dev/null
@@ -1,39 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Newtonsoft.Json;
-
-namespace BirdsiteLive.ActivityPub.Converters
-{
-    public class ContextArrayConverter : JsonConverter
-    {
-        public override bool CanWrite { get { return false; } }
-        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
-        {
-            throw new NotImplementedException();
-        }
-
-        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
-        {
-            var result = new List<string>();
-
-            var list = serializer.Deserialize<List<object>>(reader);
-            foreach (var l in list)
-            {
-                if (l is string s)
-                    result.Add(s);
-                else
-                {
-                    var str = JsonConvert.SerializeObject(l);
-                    result.Add(str);
-                }
-            }
-
-            return result.ToArray();
-        }
-
-        public override bool CanConvert(Type objectType)
-        {
-            throw new NotImplementedException();
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/Activity.cs b/src/BirdsiteLive.ActivityPub/Models/Activity.cs
index 8c78091..e6826fa 100644
--- a/src/BirdsiteLive.ActivityPub/Models/Activity.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/Activity.cs
@@ -1,17 +1,16 @@
 using System.Text.Json.Serialization;
-using Newtonsoft.Json;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class Activity
     {
-        [JsonProperty("@context")]
+        [JsonPropertyName("@context")]
         public object context { get; set; }
         public string id { get; set; }
         public string type { get; set; }
         public string actor { get; set; }
 
-        //[JsonProperty("object")]
+        //[JsonPropertyName("object")]
         //public string apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityAccept.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityAccept.cs
index 30b8746..34891c7 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityAccept.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityAccept.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityAccept : Activity
     {
-        [JsonProperty("object")]
-        public object apObject { get; set; }
+        [JsonPropertyName("object")]
+        public NestedActivity apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptFollow.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptFollow.cs
index f833a43..91ec40e 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptFollow.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptFollow.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityAcceptFollow : Activity
     {
-        [JsonProperty("object")]
-        public ActivityFollow apObject { get; set; }
+        [JsonPropertyName("object")]
+        public NestedActivity apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptUndoFollow.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptUndoFollow.cs
index 9453f25..225e8e5 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptUndoFollow.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityAcceptUndoFollow.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityAcceptUndoFollow : Activity
     {
-        [JsonProperty("object")]
+        [JsonPropertyName("object")]
         public ActivityUndoFollow apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityCreateNote.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityCreateNote.cs
index fe14ac7..9793317 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityCreateNote.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityCreateNote.cs
@@ -1,6 +1,5 @@
-using System;
-using BirdsiteLive.ActivityPub.Models;
-using Newtonsoft.Json;
+using BirdsiteLive.ActivityPub.Models;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
@@ -10,7 +9,7 @@ namespace BirdsiteLive.ActivityPub
         public string[] to { get; set; }
         public string[] cc { get; set; }
 
-        [JsonProperty("object")]
+        [JsonPropertyName("object")]
         public Note apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityDelete.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityDelete.cs
index deb7e7f..3c64c32 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityDelete.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityDelete.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub.Models
 {
     public class ActivityDelete : Activity
     {
-        [JsonProperty("object")]
-        public object apObject { get; set; }
+        [JsonPropertyName("object")]
+        public string apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityFollow.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityFollow.cs
index 26676f1..e718824 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityFollow.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityFollow.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityFollow : Activity
     {
-        [JsonProperty("object")]
+        [JsonPropertyName("object")]
         public string apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityRejectFollow.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityRejectFollow.cs
index da5d613..a03be8f 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityRejectFollow.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityRejectFollow.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityRejectFollow : Activity
     {
-        [JsonProperty("object")]
+        [JsonPropertyName("object")]
         public ActivityFollow apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityUndo.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityUndo.cs
index 2d98b5d..629bd98 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityUndo.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityUndo.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityUndo : Activity
     {
-        [JsonProperty("object")]
+        [JsonPropertyName("object")]
         public Activity apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/ActivityUndoFollow.cs b/src/BirdsiteLive.ActivityPub/Models/ActivityUndoFollow.cs
index 624988f..054cb23 100644
--- a/src/BirdsiteLive.ActivityPub/Models/ActivityUndoFollow.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/ActivityUndoFollow.cs
@@ -1,10 +1,10 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class ActivityUndoFollow : Activity
     {
-        [JsonProperty("object")]
+        [JsonPropertyName("object")]
         public ActivityFollow apObject { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/Actor.cs b/src/BirdsiteLive.ActivityPub/Models/Actor.cs
index 713ea89..e8cc75b 100644
--- a/src/BirdsiteLive.ActivityPub/Models/Actor.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/Actor.cs
@@ -1,14 +1,12 @@
 using System.Net;
 using BirdsiteLive.ActivityPub.Converters;
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub
 {
     public class Actor
     {
-        //[JsonPropertyName("@context")]
-        [JsonProperty("@context")]
-        [JsonConverter(typeof(ContextArrayConverter))]
+        [JsonPropertyName("@context")]
         public string[] context { get; set; } = new[] { "https://www.w3.org/ns/activitystreams", "https://w3id.org/security/v1" };
         public string id { get; set; }
         public string type { get; set; }
diff --git a/src/BirdsiteLive.ActivityPub/Models/Followers.cs b/src/BirdsiteLive.ActivityPub/Models/Followers.cs
index 85c44d2..1908086 100644
--- a/src/BirdsiteLive.ActivityPub/Models/Followers.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/Followers.cs
@@ -1,12 +1,11 @@
 using BirdsiteLive.ActivityPub.Converters;
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub.Models
 {
     public class Followers
     {
-        [JsonProperty("@context")]
-        [JsonConverter(typeof(ContextArrayConverter))]
+        [JsonPropertyName("@context")]
         public string context { get; set; } = "https://www.w3.org/ns/activitystreams";
 
         public string id { get; set; }
diff --git a/src/BirdsiteLive.ActivityPub/Models/NestedActivity.cs b/src/BirdsiteLive.ActivityPub/Models/NestedActivity.cs
new file mode 100644
index 0000000..f23022c
--- /dev/null
+++ b/src/BirdsiteLive.ActivityPub/Models/NestedActivity.cs
@@ -0,0 +1,16 @@
+using System.Text.Json.Serialization;
+
+namespace BirdsiteLive.ActivityPub
+{
+    public class NestedActivity
+    {
+        [JsonPropertyName("@context")]
+        public object context { get; set; }
+        public string id { get; set; }
+        public string type { get; set; }
+        public string actor { get; set; }
+
+        [JsonPropertyName("object")]
+        public string apObject { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/BirdsiteLive.ActivityPub/Models/Note.cs b/src/BirdsiteLive.ActivityPub/Models/Note.cs
index d7e158d..a6b1a9e 100644
--- a/src/BirdsiteLive.ActivityPub/Models/Note.cs
+++ b/src/BirdsiteLive.ActivityPub/Models/Note.cs
@@ -1,12 +1,10 @@
-using BirdsiteLive.ActivityPub.Converters;
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace BirdsiteLive.ActivityPub.Models
 {
     public class Note
     {
-        [JsonProperty("@context")]
-        [JsonConverter(typeof(ContextArrayConverter))]
+        [JsonPropertyName("@context")]
         public string[] context { get; set; } = new[] { "https://www.w3.org/ns/activitystreams" };
 
         public string id { get; set; }
diff --git a/src/BirdsiteLive.Domain/ActivityPubService.cs b/src/BirdsiteLive.Domain/ActivityPubService.cs
index e18193e..914eae6 100644
--- a/src/BirdsiteLive.Domain/ActivityPubService.cs
+++ b/src/BirdsiteLive.Domain/ActivityPubService.cs
@@ -4,13 +4,14 @@ using System.Net;
 using System.Net.Http;
 using System.Security.Cryptography;
 using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
 using System.Threading.Tasks;
 using BirdsiteLive.ActivityPub;
 using BirdsiteLive.ActivityPub.Converters;
 using BirdsiteLive.ActivityPub.Models;
 using BirdsiteLive.Common.Settings;
 using Microsoft.Extensions.Logging;
-using Newtonsoft.Json;
 
 namespace BirdsiteLive.Domain
 {
@@ -52,7 +53,7 @@ namespace BirdsiteLive.Domain
 
             var content = await result.Content.ReadAsStringAsync();
 
-            var actor = JsonConvert.DeserializeObject<Actor>(content);
+            var actor = JsonSerializer.Deserialize<Actor>(content);
             if (string.IsNullOrWhiteSpace(actor.url)) actor.url = objectId;
             return actor;
         }
@@ -78,7 +79,7 @@ namespace BirdsiteLive.Domain
             if (!string.IsNullOrWhiteSpace(inbox))
                 usedInbox = inbox;
 
-            var json = JsonConvert.SerializeObject(data, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
+            var json = JsonSerializer.Serialize(data, new JsonSerializerOptions() { DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull });
 
             var date = DateTime.UtcNow.ToUniversalTime();
             var httpDate = date.ToString("r");
diff --git a/src/BirdsiteLive.Domain/UserService.cs b/src/BirdsiteLive.Domain/UserService.cs
index 8131c7e..ab248e4 100644
--- a/src/BirdsiteLive.Domain/UserService.cs
+++ b/src/BirdsiteLive.Domain/UserService.cs
@@ -188,7 +188,7 @@ namespace BirdsiteLive.Domain
                 id = $"{activity.apObject}#accepts/follows/{Guid.NewGuid()}",
                 type = "Accept",
                 actor = activity.apObject,
-                apObject = new ActivityFollow()
+                apObject = new NestedActivity()
                 {
                     id = activity.id,
                     type = activity.type,
diff --git a/src/BirdsiteLive/Controllers/DebugingController.cs b/src/BirdsiteLive/Controllers/DebugingController.cs
index 00accef..ed32782 100644
--- a/src/BirdsiteLive/Controllers/DebugingController.cs
+++ b/src/BirdsiteLive/Controllers/DebugingController.cs
@@ -10,7 +10,6 @@ using BirdsiteLive.Common.Settings;
 using BirdsiteLive.Domain;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
-using Newtonsoft.Json;
 
 namespace BirdsiteLive.Controllers
 {
diff --git a/src/BirdsiteLive/Controllers/UsersController.cs b/src/BirdsiteLive/Controllers/UsersController.cs
index 5ce6179..d6b0bff 100644
--- a/src/BirdsiteLive/Controllers/UsersController.cs
+++ b/src/BirdsiteLive/Controllers/UsersController.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Text.Json;
 using System.Net.Mime;
 using System.Text.RegularExpressions;
 using System.Threading;
@@ -19,7 +20,6 @@ using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Primitives;
-using Newtonsoft.Json;
 
 namespace BirdsiteLive.Controllers
 {
@@ -111,7 +111,7 @@ namespace BirdsiteLive.Controllers
                     if (isSaturated) return new ObjectResult("Too Many Requests") { StatusCode = 429 };
                     if (notFound) return NotFound();
                     var apUser = _userService.GetUser(user);
-                    var jsonApUser = JsonConvert.SerializeObject(apUser);
+                    var jsonApUser = System.Text.Json.JsonSerializer.Serialize(apUser);
                     return Content(jsonApUser, "application/activity+json; charset=utf-8");
                 }
             }
@@ -155,7 +155,7 @@ namespace BirdsiteLive.Controllers
 
                 if (r.Contains("application/activity+json"))
                 {
-                    var jsonApUser = JsonConvert.SerializeObject(status);
+                    var jsonApUser = JsonSerializer.Serialize(status);
                     return Content(jsonApUser, "application/activity+json; charset=utf-8");
                 }
             }
@@ -185,7 +185,7 @@ namespace BirdsiteLive.Controllers
 
             var status = _statusService.GetActivity(id, tweet);
 
-            var jsonApUser = JsonConvert.SerializeObject(status);
+            var jsonApUser = JsonSerializer.Serialize(status);
             return Content(jsonApUser, "application/activity+json; charset=utf-8");
         }
 
@@ -269,7 +269,7 @@ namespace BirdsiteLive.Controllers
             {
                 id = $"https://{_instanceSettings.Domain}/users/{id}/followers"
             };
-            var jsonApUser = JsonConvert.SerializeObject(followers);
+            var jsonApUser = JsonSerializer.Serialize(followers);
             return Content(jsonApUser, "application/activity+json; charset=utf-8");
         }
     }
diff --git a/src/BirdsiteLive/Properties/launchSettings.json b/src/BirdsiteLive/Properties/launchSettings.json
index 80d2896..dedaf88 100644
--- a/src/BirdsiteLive/Properties/launchSettings.json
+++ b/src/BirdsiteLive/Properties/launchSettings.json
@@ -19,7 +19,8 @@
       "commandName": "Project",
       "launchBrowser": true,
       "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "Instance__ParallelTwitterRequests": "0"
       },
       "applicationUrl": "http://localhost:5000"
     },