.

src/WireMock.Net.Minimal/Owin/WireMockMiddlewareLogger.cs

@@ -1,7 +1,6 @@
 // Copyright © WireMock.Net
 
 using System.Diagnostics;
-using System.Linq;
 using WireMock.Logging;
 using WireMock.Owin.ActivityTracing;
 using WireMock.Serialization;
@@ -42,7 +41,7 @@ internal class WireMockMiddlewareLogger(
             if (_options.SaveUnmatchedRequests == true && match?.RequestMatchResult is not { IsPerfectMatch: true })
             {
                 var filename = $"{logEntry.Guid}.LogEntry.json";
-                _options.FileSystemHandler?.WriteUnmatchedRequest(filename, JsonUtils.Serialize(logEntry));
+                _options.FileSystemHandler?.WriteUnmatchedRequest(filename, _options.DefaultJsonSerializer.Serialize(logEntry));
             }
         }
         catch

src/WireMock.Net.Shared/Util/BodyParser.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System.Linq;
 using System.Net.Http.Headers;
 using System.Text;
 using Stef.Validation;

src/WireMock.Net.Shared/Util/JsonUtils.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
 using System.Collections;
 using System.Diagnostics.CodeAnalysis;
 using System.Text;
@@ -35,7 +34,7 @@ internal static class JsonUtils
 
         try
         {
-            // Try to convert this string into a JToken
+            // Try to convert this string into a JObject
             value = JObject.Parse(strInput!);
             return true;
         }
@@ -45,11 +44,6 @@ internal static class JsonUtils
         }
     }
 
-    public static string Serialize(object value)
-    {
-        return JsonConvert.SerializeObject(value, JsonSerializationConstants.JsonSerializerSettingsIncludeNullValues);
-    }
-
     public static byte[] SerializeAsPactFile(object value)
     {
         var json = JsonConvert.SerializeObject(value, JsonSerializationConstants.JsonSerializerSettingsPact);