diff --git a/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs b/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs
index 3dd8bff61b..fc6b82a16b 100644
--- a/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs
+++ b/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs
@@ -1,8 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
+using System.Buffers;
 using System.Collections.Generic;
+using System.Text;
 using MessagePack;
 using MessagePack.Formatters;
 using osu.Framework.Bindables;
@@ -11,59 +12,51 @@ namespace osu.Game.Online.API
 {
     public class ModSettingsDictionaryFormatter : IMessagePackFormatter<Dictionary<string, object>>
     {
-        public int Serialize(ref byte[] bytes, int offset, Dictionary<string, object> value, IFormatterResolver formatterResolver)
+        public void Serialize(ref MessagePackWriter writer, Dictionary<string, object> value, MessagePackSerializerOptions options)
         {
-            int startOffset = offset;
-
             var primitiveFormatter = PrimitiveObjectFormatter.Instance;
 
-            offset += MessagePackBinary.WriteArrayHeader(ref bytes, offset, value.Count);
+            writer.WriteArrayHeader(value.Count);
 
             foreach (var kvp in value)
             {
-                offset += MessagePackBinary.WriteString(ref bytes, offset, kvp.Key);
+                var stringBytes = new ReadOnlySequence<byte>(Encoding.UTF8.GetBytes(kvp.Key));
+                writer.WriteString(in stringBytes);
 
                 switch (kvp.Value)
                 {
                     case Bindable<double> d:
-                        offset += primitiveFormatter.Serialize(ref bytes, offset, d.Value, formatterResolver);
+                        primitiveFormatter.Serialize(ref writer, d.Value, options);
                         break;
 
                     case Bindable<float> f:
-                        offset += primitiveFormatter.Serialize(ref bytes, offset, f.Value, formatterResolver);
+                        primitiveFormatter.Serialize(ref writer, f.Value, options);
                         break;
 
                     case Bindable<bool> b:
-                        offset += primitiveFormatter.Serialize(ref bytes, offset, b.Value, formatterResolver);
+                        primitiveFormatter.Serialize(ref writer, b.Value, options);
                         break;
 
                     default:
-                        throw new ArgumentException("A setting was of a type not supported by the messagepack serialiser", nameof(bytes));
+                        // fall back for non-bindable cases.
+                        primitiveFormatter.Serialize(ref writer, kvp.Value, options);
+                        break;
                 }
             }
-
-            return offset - startOffset;
         }
 
-        public Dictionary<string, object> Deserialize(byte[] bytes, int offset, IFormatterResolver formatterResolver, out int readSize)
+        public Dictionary<string, object> Deserialize(ref MessagePackReader reader, MessagePackSerializerOptions options)
         {
-            int startOffset = offset;
-
             var output = new Dictionary<string, object>();
 
-            int itemCount = MessagePackBinary.ReadArrayHeader(bytes, offset, out readSize);
-            offset += readSize;
+            int itemCount = reader.ReadArrayHeader();
 
             for (int i = 0; i < itemCount; i++)
             {
-                var key = MessagePackBinary.ReadString(bytes, offset, out readSize);
-                offset += readSize;
-
-                output[key] = PrimitiveObjectFormatter.Instance.Deserialize(bytes, offset, formatterResolver, out readSize);
-                offset += readSize;
+                output[reader.ReadString()] =
+                    PrimitiveObjectFormatter.Instance.Deserialize(ref reader, options);
             }
 
-            readSize = offset - startOffset;
             return output;
         }
     }
diff --git a/osu.Game/osu.Game.csproj b/osu.Game/osu.Game.csproj
index e2b506e187..eabd5c7d12 100644
--- a/osu.Game/osu.Game.csproj
+++ b/osu.Game/osu.Game.csproj
@@ -20,11 +20,12 @@
   <ItemGroup Label="Package References">
     <PackageReference Include="DiffPlex" Version="1.6.3" />
     <PackageReference Include="Humanizer" Version="2.8.26" />
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="3.1.10" />
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.MessagePack" Version="3.1.11" />
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.NewtonsoftJson" Version="3.1.10" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="5.0.2" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.MessagePack" Version="5.0.2" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Protocols.NewtonsoftJson" Version="5.0.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.2.6" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="2.2.6" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="2.2.0" />
     <PackageReference Include="Microsoft.NETCore.Targets" Version="3.1.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="ppy.osu.Framework" Version="2021.128.0" />