diff --git a/Directory.Build.props b/Directory.Build.props
index 86955e73..1df62db2 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -15,6 +15,7 @@
         <PackageReadmeFile>PackageReadme.md</PackageReadmeFile>
         <LangVersion>12</LangVersion>
         <Nullable>enable</Nullable>
+        <ImplicitUsings>enable</ImplicitUsings>
     </PropertyGroup>
 
     <PropertyGroup Condition="'$(TF_BUILD)' == 'true'">
diff --git a/src/WireMock.Net.Abstractions/Types/HostingScheme.cs b/src/WireMock.Net.Abstractions/Types/HostingScheme.cs
index beaaa11f..6ee89b9f 100644
--- a/src/WireMock.Net.Abstractions/Types/HostingScheme.cs
+++ b/src/WireMock.Net.Abstractions/Types/HostingScheme.cs
@@ -1,7 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
-
 namespace WireMock.Types;
 
 [Flags]
@@ -13,5 +11,11 @@ public enum HostingScheme
 
     Https = 0x2,
 
-    HttpAndHttps = Http | Https
+    HttpAndHttps = Http | Https,
+
+    Ws = 0x4,
+
+    Wss = 0x8,
+
+    WsAndWss = Ws | Wss
 }
\ No newline at end of file
diff --git a/src/WireMock.Net.Minimal/Owin/AspNetCoreSelfHost.cs b/src/WireMock.Net.Minimal/Owin/AspNetCoreSelfHost.cs
index bb696c2d..ae5b1c6f 100644
--- a/src/WireMock.Net.Minimal/Owin/AspNetCoreSelfHost.cs
+++ b/src/WireMock.Net.Minimal/Owin/AspNetCoreSelfHost.cs
@@ -1,10 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.DependencyInjection;
@@ -27,9 +22,9 @@ internal partial class AspNetCoreSelfHost : IOwinSelfHost
 
     public bool IsStarted { get; private set; }
 
-    public List<string> Urls { get; } = new();
+    public List<string> Urls { get; } = [];
 
-    public List<int> Ports { get; } = new();
+    public List<int> Ports { get; } = [];
 
     public Exception? RunningException { get; private set; }
 
@@ -120,14 +115,42 @@ internal partial class AspNetCoreSelfHost : IOwinSelfHost
             {
                 var addresses = _host.ServerFeatures
                     .Get<Microsoft.AspNetCore.Hosting.Server.Features.IServerAddressesFeature>()!
-                    .Addresses;
+                    .Addresses
+                    .ToArray();
 
-                foreach (var address in addresses)
+                if (_urlOptions.Urls == null)
                 {
-                    Urls.Add(address.Replace("0.0.0.0", "localhost").Replace("[::]", "localhost"));
+                    foreach (var address in addresses)
+                    {
+                        PortUtils.TryExtract(address, out _, out _, out var scheme, out var host, out var port);
 
-                    PortUtils.TryExtract(address, out _, out _, out _, out _, out var port);
-                    Ports.Add(port);
+                        var replacedHost = ReplaceHostWithLocalhost(host!);
+                        var newUrl = $"{scheme}://{replacedHost}:{port}";
+                        Urls.Add(newUrl);
+                        Ports.Add(port);
+                    }
+                }
+                else
+                {
+                    var urlOptions = _urlOptions?.Urls?.ToArray() ?? [];
+
+                    for (int i = 0; i < urlOptions.Length; i++)
+                    {
+                        PortUtils.TryExtract(urlOptions[i], out _, out _, out var originalScheme, out _, out _);
+                        if (originalScheme!.StartsWith("grpc", StringComparison.OrdinalIgnoreCase))
+                        {
+                            // Always replace "grpc" with "http" in the scheme because GrpcChannel needs http or https.
+                            originalScheme = originalScheme.Replace("grpc", "http", StringComparison.OrdinalIgnoreCase);
+                        }
+
+                        PortUtils.TryExtract(addresses[i], out _, out _, out _, out var realHost, out var realPort);
+
+                        var replacedHost = ReplaceHostWithLocalhost(realHost!);
+                        var newUrl = $"{originalScheme}://{replacedHost}:{realPort}";
+
+                        Urls.Add(newUrl);
+                        Ports.Add(realPort);
+                    }
                 }
 
                 IsStarted = true;
@@ -159,4 +182,9 @@ internal partial class AspNetCoreSelfHost : IOwinSelfHost
         IsStarted = false;
         return _host.StopAsync();
     }
+
+    private static string ReplaceHostWithLocalhost(string host)
+    {
+        return host.Replace("0.0.0.0", "localhost").Replace("[::]", "localhost");
+    }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net.Minimal/Owin/HostUrlOptions.cs b/src/WireMock.Net.Minimal/Owin/HostUrlOptions.cs
index 055e14d5..6e06aaa3 100644
--- a/src/WireMock.Net.Minimal/Owin/HostUrlOptions.cs
+++ b/src/WireMock.Net.Minimal/Owin/HostUrlOptions.cs
@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System.Collections.Generic;
 using WireMock.Types;
 using WireMock.Util;
 
@@ -23,20 +22,34 @@ internal class HostUrlOptions
         var list = new List<HostUrlDetails>();
         if (Urls == null)
         {
-            if (HostingScheme is HostingScheme.Http or HostingScheme.Https)
+            if (HostingScheme is not HostingScheme.None)
             {
-                var port = Port > 0 ? Port.Value : FindFreeTcpPort();
-                var scheme = HostingScheme == HostingScheme.Https ? "https" : "http";
-                list.Add(new HostUrlDetails { IsHttps = HostingScheme == HostingScheme.Https, IsHttp2 = UseHttp2 == true, Url = $"{scheme}://{Star}:{port}", Scheme = scheme, Host = Star, Port = port });
+                var scheme = GetSchemeAsString(HostingScheme);
+                var port = Port > 0 ? Port.Value : 0;
+                var isHttps = HostingScheme == HostingScheme.Https || HostingScheme == HostingScheme.Wss;
+                list.Add(new HostUrlDetails { IsHttps = isHttps, IsHttp2 = UseHttp2 == true, Url = $"{scheme}://{Star}:{port}", Scheme = scheme, Host = Star, Port = port });
             }
 
             if (HostingScheme == HostingScheme.HttpAndHttps)
             {
-                var httpPort = Port > 0 ? Port.Value : FindFreeTcpPort();
-                list.Add(new HostUrlDetails { IsHttps = false, IsHttp2 = UseHttp2 == true, Url = $"http://{Star}:{httpPort}", Scheme = "http", Host = Star, Port = httpPort });
+                var port = Port > 0 ? Port.Value : 0;
+                var scheme = GetSchemeAsString(HostingScheme.Http);
+                list.Add(new HostUrlDetails { IsHttps = false, IsHttp2 = UseHttp2 == true, Url = $"{scheme}://{Star}:{port}", Scheme = scheme, Host = Star, Port = port });
 
-                var httpsPort = FindFreeTcpPort(); // In this scenario, always get a free port for https.
-                list.Add(new HostUrlDetails { IsHttps = true, IsHttp2 = UseHttp2 == true, Url = $"https://{Star}:{httpsPort}", Scheme = "https", Host = Star, Port = httpsPort });
+                var securePort = 0; // In this scenario, always get a free port for https.
+                var secureScheme = GetSchemeAsString(HostingScheme.Https);
+                list.Add(new HostUrlDetails { IsHttps = true, IsHttp2 = UseHttp2 == true, Url = $"{secureScheme}://{Star}:{securePort}", Scheme = secureScheme, Host = Star, Port = securePort });
+            }
+
+            if (HostingScheme == HostingScheme.WsAndWss)
+            {
+                var port = Port > 0 ? Port.Value : 0;
+                var scheme = GetSchemeAsString(HostingScheme.Ws);
+                list.Add(new HostUrlDetails { IsHttps = false, IsHttp2 = UseHttp2 == true, Url = $"{scheme}://{Star}:{port}", Scheme = scheme, Host = Star, Port = port });
+
+                var securePort = 0; // In this scenario, always get a free port for https.
+                var secureScheme = GetSchemeAsString(HostingScheme.Wss);
+                list.Add(new HostUrlDetails { IsHttps = true, IsHttp2 = UseHttp2 == true, Url = $"{secureScheme}://{Star}:{securePort}", Scheme = secureScheme, Host = Star, Port = securePort });
             }
         }
         else
@@ -53,12 +66,19 @@ internal class HostUrlOptions
         return list;
     }
 
-    private static int FindFreeTcpPort()
+    private string GetSchemeAsString(HostingScheme scheme)
     {
-//#if USE_ASPNETCORE || NETSTANDARD2_0 || NETSTANDARD2_1
-        return 0;
-//#else
-        //return PortUtils.FindFreeTcpPort();
-//#endif
+        return scheme switch
+        {
+            HostingScheme.Http => "http",
+            HostingScheme.Https => "https",
+            HostingScheme.HttpAndHttps => "http", // Default to http when both are specified, since the https URL will be added separately with a free port.
+
+            HostingScheme.Ws => "ws",
+            HostingScheme.Wss => "wss",
+            HostingScheme.WsAndWss => "ws", // Default to ws when both are specified, since the wss URL will be added separately with a free port.
+
+            _ => throw new NotSupportedException($"Unsupported hosting scheme: {HostingScheme}")
+        };
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net.Minimal/Util/PortUtils.cs b/src/WireMock.Net.Minimal/Util/PortUtils.cs
index a4465725..ef8e3560 100644
--- a/src/WireMock.Net.Minimal/Util/PortUtils.cs
+++ b/src/WireMock.Net.Minimal/Util/PortUtils.cs
@@ -1,9 +1,6 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
-using System.Linq;
 using System.Net;
 using System.Net.Sockets;
 using System.Text.RegularExpressions;
@@ -16,7 +13,7 @@ namespace WireMock.Util;
 /// </summary>
 internal static class PortUtils
 {
-    private static readonly Regex UrlDetailsRegex = new(@"^((?<proto>\w+)://)(?<host>[^/]+?):(?<port>\d+)\/?$", RegexOptions.Compiled, RegexConstants.DefaultTimeout);
+    private static readonly Regex UrlDetailsRegex = new(@"^((?<scheme>\w+)://)(?<host>[^/]+?):(?<port>\d+)\/?$", RegexOptions.Compiled, RegexConstants.DefaultTimeout);
 
     /// <summary>
     /// Finds a random, free port to be listened on.
@@ -37,9 +34,7 @@ internal static class PortUtils
         }
         finally
         {
-//#if !NETSTANDARD1_3
             portSocket.Close();
-//#endif
             portSocket.Dispose();
         }
     }
@@ -75,9 +70,7 @@ internal static class PortUtils
         {
             foreach (var socket in sockets)
             {
-//#if !NETSTANDARD1_3
                 socket.Close();
-//#endif
                 socket.Dispose();
             }
         }
@@ -97,8 +90,8 @@ internal static class PortUtils
         var match = UrlDetailsRegex.Match(url);
         if (match.Success)
         {
-            scheme = match.Groups["proto"].Value;
-            isHttps = scheme.StartsWith("https", StringComparison.OrdinalIgnoreCase) || scheme.StartsWith("grpcs", StringComparison.OrdinalIgnoreCase);
+            scheme = match.Groups["scheme"].Value;
+            isHttps = scheme.StartsWith("https", StringComparison.OrdinalIgnoreCase) || scheme.StartsWith("grpcs", StringComparison.OrdinalIgnoreCase) || scheme.StartsWith("wss", StringComparison.OrdinalIgnoreCase);
             isHttp2 = scheme.StartsWith("grpc", StringComparison.OrdinalIgnoreCase);
             host = match.Groups["host"].Value;
 
diff --git a/src/WireMock.Net.Minimal/WebSockets/WebSocketBuilder.cs b/src/WireMock.Net.Minimal/WebSockets/WebSocketBuilder.cs
index 6f24ca80..7dc8a8e8 100644
--- a/src/WireMock.Net.Minimal/WebSockets/WebSocketBuilder.cs
+++ b/src/WireMock.Net.Minimal/WebSockets/WebSocketBuilder.cs
@@ -64,16 +64,14 @@ internal class WebSocketBuilder : IWebSocketBuilder
         return this;
     }
 
-    public IWebSocketBuilder WithMessageHandler(
-        Func<WebSocketMessage, IWebSocketContext, Task> handler)
+    public IWebSocketBuilder WithMessageHandler(Func<WebSocketMessage, IWebSocketContext, Task> handler)
     {
         MessageHandler = Guard.NotNull(handler);
         IsEcho = false; // Disable echo if custom handler is set
         return this;
     }
 
-    public IWebSocketBuilder WithMessageSequence(
-        Action<IWebSocketMessageSequenceBuilder> configure)
+    public IWebSocketBuilder WithMessageSequence(Action<IWebSocketMessageSequenceBuilder> configure)
     {
         var sequenceBuilder = new WebSocketMessageSequenceBuilder();
         configure(sequenceBuilder);
diff --git a/test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs b/test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs
index 273e0507..cbb2448a 100644
--- a/test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs
+++ b/test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs
@@ -1,12 +1,7 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Net.WebSockets;
 using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
 using FluentAssertions;
 using Newtonsoft.Json.Linq;
 using WireMock.Net.Xunit;
@@ -14,7 +9,6 @@ using WireMock.RequestBuilders;
 using WireMock.ResponseBuilders;
 using WireMock.Server;
 using WireMock.Settings;
-using Xunit;
 using Xunit.Abstractions;
 
 namespace WireMock.Net.Tests.WebSockets;
@@ -34,7 +28,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -43,14 +38,13 @@ public class WebSocketIntegrationTests
                 .WithWebSocketUpgrade()
             )
             .RespondWith(Response.Create()
-                .WithHeader("x", "y")
                 .WithWebSocket(ws => ws
                     .WithEcho()
                 )
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/echo");
+        var uri = new Uri($"{server.Url!}/ws/echo");
 
         // Act
         await client.ConnectAsync(uri, CancellationToken.None);
@@ -78,7 +72,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -91,7 +86,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/echo");
+        var uri = new Uri($"{server.Url!}/ws/echo");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         var testMessages = new[] { "Hello", "World", "WebSocket", "Test" };
@@ -118,7 +113,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -131,7 +127,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/echo");
+        var uri = new Uri($"{server.Url!}/ws/echo");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         var testData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };
@@ -157,7 +153,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -170,7 +167,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/echo");
+        var uri = new Uri($"{server.Url!}/ws/echo");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         // Act
@@ -192,7 +189,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -218,7 +216,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/chat");
+        var uri = new Uri($"{server.Url!}/ws/chat");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         // Act
@@ -244,7 +242,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -288,7 +287,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/chat");
+        var uri = new Uri($"{server.Url!}/ws/chat");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         var commands = new (string, Action<string>)[]
@@ -322,7 +321,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -348,7 +348,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/json");
+        var uri = new Uri($"{server.Url!}/ws/json");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         // Act
@@ -362,7 +362,7 @@ public class WebSocketIntegrationTests
 
         // Assert
         result.MessageType.Should().Be(WebSocketMessageType.Text);
-        
+
         var json = JObject.Parse(received);
         json["message"]!.ToString().Should().Be(testMessage);
         json["length"]!.Value<int>().Should().Be(testMessage.Length);
@@ -378,7 +378,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -404,7 +405,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/json");
+        var uri = new Uri($"{server.Url!}/ws/json");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         var testMessages = new[] { "First", "Second", "Third" };
@@ -433,7 +434,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         server
@@ -470,7 +472,7 @@ public class WebSocketIntegrationTests
             );
 
         using var client = new ClientWebSocket();
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/json");
+        var uri = new Uri($"{server.Url!}/ws/json");
         await client.ConnectAsync(uri, CancellationToken.None);
 
         // Act
@@ -499,7 +501,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         var broadcastMappingGuid = Guid.NewGuid();
@@ -533,7 +536,7 @@ public class WebSocketIntegrationTests
         using var client2 = new ClientWebSocket();
         using var client3 = new ClientWebSocket();
 
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/broadcast");
+        var uri = new Uri($"{server.Url!}/ws/broadcast");
 
         await client1.ConnectAsync(uri, CancellationToken.None);
         await client2.ConnectAsync(uri, CancellationToken.None);
@@ -579,7 +582,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         var broadcastMappingGuid = Guid.NewGuid();
@@ -606,7 +610,7 @@ public class WebSocketIntegrationTests
         using var client1 = new ClientWebSocket();
         using var client2 = new ClientWebSocket();
 
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/broadcast");
+        var uri = new Uri($"{server.Url!}/ws/broadcast");
 
         await client1.ConnectAsync(uri, CancellationToken.None);
         await client2.ConnectAsync(uri, CancellationToken.None);
@@ -639,7 +643,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         var broadcastMappingGuid = Guid.NewGuid();
@@ -673,7 +678,7 @@ public class WebSocketIntegrationTests
         using var client1 = new ClientWebSocket();
         using var client2 = new ClientWebSocket();
 
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/broadcast-json");
+        var uri = new Uri($"{server.Url!}/ws/broadcast-json");
 
         await client1.ConnectAsync(uri, CancellationToken.None);
         await client2.ConnectAsync(uri, CancellationToken.None);
@@ -717,7 +722,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         var broadcastMappingGuid = Guid.NewGuid();
@@ -746,7 +752,7 @@ public class WebSocketIntegrationTests
         using var client1 = new ClientWebSocket();
         using var client2 = new ClientWebSocket();
 
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/broadcast");
+        var uri = new Uri($"{server.Url!}/ws/broadcast");
 
         await client1.ConnectAsync(uri, CancellationToken.None);
         await client2.ConnectAsync(uri, CancellationToken.None);
@@ -784,7 +790,8 @@ public class WebSocketIntegrationTests
         // Arrange
         using var server = WireMockServer.Start(new WireMockServerSettings
         {
-            Logger = new TestOutputHelperWireMockLogger(_output)
+            Logger = new TestOutputHelperWireMockLogger(_output),
+            Urls = ["ws://localhost:0"]
         });
 
         var broadcastMappingGuid = Guid.NewGuid();
@@ -808,8 +815,8 @@ public class WebSocketIntegrationTests
                 )
             );
 
-        var uri = new Uri($"{server.Urls[0].Replace("http://", "ws://")}/ws/broadcast");
-        const int clientCount = 5;
+        var uri = new Uri($"{server.Url!}/ws/broadcast");
+        const int clientCount = 3;
         var clients = new List<ClientWebSocket>();
 
         try
@@ -822,7 +829,7 @@ public class WebSocketIntegrationTests
                 clients.Add(client);
             }
 
-            await Task.Delay(200); // Give time for all connections to register
+            await Task.Delay(100); // Give time for all connections to register
 
             // Act - Send message from first client
             var testMessage = "Mass broadcast";