diff --git a/src/X1.WebSocket/Models/TransferProtocolLog.cs b/src/X1.WebSocket/Models/TransferProtocolLog.cs
index 24369c2..74e1f6a 100644
--- a/src/X1.WebSocket/Models/TransferProtocolLog.cs
+++ b/src/X1.WebSocket/Models/TransferProtocolLog.cs
@@ -2,8 +2,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using System.Text.Json;
-using System.Text.Json.Serialization;
 using System.Threading.Tasks;
 
 namespace X1.WebSocket.Models
@@ -76,18 +74,10 @@ namespace X1.WebSocket.Models
         public IEnumerable<string>? MessageDetail
         {
             get => !string.IsNullOrEmpty(MessageDetailJson)
-                ? JsonSerializer.Deserialize<IEnumerable<string>>(MessageDetailJson, new JsonSerializerOptions
-                {
-                    PropertyNameCaseInsensitive = true,
-                    DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
-                })
+                ? Newtonsoft.Json.JsonConvert.DeserializeObject<IEnumerable<string>>(MessageDetailJson)
                 : null;
             set => MessageDetailJson = value != null
-                ? JsonSerializer.Serialize(value, new JsonSerializerOptions
-                {
-                    DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
-                    WriteIndented = true
-                })
+                ? Newtonsoft.Json.JsonConvert.SerializeObject(value)
                 : null;
         }
 
diff --git a/src/X1.WebSocket/X1.WebSocket.csproj b/src/X1.WebSocket/X1.WebSocket.csproj
index db5a62d..0c6638e 100644
--- a/src/X1.WebSocket/X1.WebSocket.csproj
+++ b/src/X1.WebSocket/X1.WebSocket.csproj
@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.WebSockets" Version="2.2.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="System.Threading.Channels" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />