diff --git a/src/SecTester.Repeater/Internal/HttpMethods.cs b/src/SecTester.Repeater/Internal/HttpMethods.cs
index 1900399..e1069f6 100644
--- a/src/SecTester.Repeater/Internal/HttpMethods.cs
+++ b/src/SecTester.Repeater/Internal/HttpMethods.cs
@@ -6,7 +6,7 @@
 
 namespace SecTester.Repeater.Internal;
 
-public class HttpMethods
+public static class HttpMethods
 {
   public static IDictionary<string, HttpMethod> Items { get; } = typeof(HttpMethod)
       .GetProperties(BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly)
diff --git a/src/SecTester.Repeater/Internal/JsonHttpMethodEnumerationStringConverter.cs b/src/SecTester.Repeater/Internal/JsonHttpMethodEnumerationStringConverter.cs
index 0d1b322..5a87c89 100644
--- a/src/SecTester.Repeater/Internal/JsonHttpMethodEnumerationStringConverter.cs
+++ b/src/SecTester.Repeater/Internal/JsonHttpMethodEnumerationStringConverter.cs
@@ -1,8 +1,5 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Net.Http;
-using System.Reflection;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
@@ -10,36 +7,13 @@ namespace SecTester.Repeater.Internal;
 
 internal class JsonHttpMethodEnumerationStringConverter : JsonConverter<HttpMethod>
 {
-  private static readonly IEnumerable<HttpMethod> BaseMethods = typeof(HttpMethod)
-    .GetProperties(BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly)
-    .Where(x => x.PropertyType.IsAssignableFrom(typeof(HttpMethod)))
-    .Select(x => x.GetValue(null))
-    .Cast<HttpMethod>();
-
-  private static readonly IEnumerable<HttpMethod> CustomMethods = new List<HttpMethod>
-  {
-    new("PATCH"),
-    new("COPY"),
-    new("LINK"),
-    new("UNLINK"),
-    new("PURGE"),
-    new("LOCK"),
-    new("UNLOCK"),
-    new("PROPFIND"),
-    new("VIEW")
-  };
-
-  private static readonly IDictionary<string, HttpMethod> Methods = BaseMethods.Concat(CustomMethods).Distinct()
-    .ToDictionary(x => x.Method, x => x, StringComparer.InvariantCultureIgnoreCase);
-
-
   public override HttpMethod? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
   {
     switch (reader.TokenType)
     {
       case JsonTokenType.String:
         var token = reader.GetString();
-        if (token is null || !Methods.TryGetValue(token, out var method))
+        if (token is null || !HttpMethods.Items.TryGetValue(token, out var method))
         {
           throw new JsonException(
             $"Unexpected value {token} when parsing the {nameof(HttpMethod)}.");
@@ -56,7 +30,7 @@ internal class JsonHttpMethodEnumerationStringConverter : JsonConverter<HttpMeth
 
   public override void Write(Utf8JsonWriter writer, HttpMethod value, JsonSerializerOptions options)
   {
-    if (!Methods.TryGetValue(value.Method, out var method))
+    if (!HttpMethods.Items.TryGetValue(value.Method, out var method))
     {
       throw new JsonException(
         $"Unexpected value {value.Method} when writing the {nameof(HttpMethod)}.");