diff --git a/src/SignalR/clients/csharp/Client/src/HubConnectionBuilderHttpExtensions.cs b/src/SignalR/clients/csharp/Client/src/HubConnectionBuilderHttpExtensions.cs
index 6c5001e4958f..8e64c03a5fb9 100644
--- a/src/SignalR/clients/csharp/Client/src/HubConnectionBuilderHttpExtensions.cs
+++ b/src/SignalR/clients/csharp/Client/src/HubConnectionBuilderHttpExtensions.cs
@@ -157,7 +157,7 @@ private static IHubConnectionBuilder WithUrlCore(this IHubConnectionBuilder hubC
         private class HttpConnectionOptionsDerivedHttpEndPoint : UriEndPoint
         {
             public HttpConnectionOptionsDerivedHttpEndPoint(IOptions<HttpConnectionOptions> httpConnectionOptions)
-                : base(httpConnectionOptions.Value.Url)
+                : base(httpConnectionOptions.Value.Url!)
             {
             }
         }
diff --git a/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnection.cs b/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnection.cs
index cfd4839ef9df..6bd1cd88fdee 100644
--- a/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnection.cs
+++ b/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnection.cs
@@ -46,6 +46,7 @@ public partial class HttpConnection : ConnectionContext, IConnectionInherentKeep
         private string? _connectionId;
         private readonly ConnectionLogScope _logScope;
         private readonly ILoggerFactory _loggerFactory;
+        private readonly Uri _url;
         private Func<Task<string?>>? _accessTokenProvider;
 
         /// <inheritdoc />
@@ -148,6 +149,8 @@ public HttpConnection(HttpConnectionOptions httpConnectionOptions, ILoggerFactor
             _logger = _loggerFactory.CreateLogger<HttpConnection>();
             _httpConnectionOptions = httpConnectionOptions;
 
+            _url = _httpConnectionOptions.Url;
+
             if (!httpConnectionOptions.SkipNegotiation || httpConnectionOptions.Transports != HttpTransportType.WebSockets)
             {
                 _httpClient = CreateHttpClient();
@@ -303,7 +306,7 @@ private async Task DisposeAsyncCore()
 
         private async Task SelectAndStartTransport(TransferFormat transferFormat, CancellationToken cancellationToken)
         {
-            var uri = _httpConnectionOptions.Url;
+            var uri = _url;
             // Set the initial access token provider back to the original one from options
             _accessTokenProvider = _httpConnectionOptions.AccessTokenProvider;
 
diff --git a/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnectionOptions.cs b/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnectionOptions.cs
index afd28c1d2d1b..36879c48a0d9 100644
--- a/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnectionOptions.cs
+++ b/src/SignalR/clients/csharp/Http.Connections.Client/src/HttpConnectionOptions.cs
@@ -99,7 +99,7 @@ public CookieContainer Cookies
         /// <summary>
         /// Gets or sets the URL used to send HTTP requests.
         /// </summary>
-        public Uri Url { get; set; } = default!;
+        public Uri? Url { get; set; }
 
         /// <summary>
         /// Gets or sets a bitmask combining one or more <see cref="HttpTransportType"/> values that specify what transports the client should use to send HTTP requests.
diff --git a/src/SignalR/clients/csharp/Http.Connections.Client/src/PublicAPI.Shipped.txt b/src/SignalR/clients/csharp/Http.Connections.Client/src/PublicAPI.Shipped.txt
index 460c8e2b6e70..a75488a55b28 100644
--- a/src/SignalR/clients/csharp/Http.Connections.Client/src/PublicAPI.Shipped.txt
+++ b/src/SignalR/clients/csharp/Http.Connections.Client/src/PublicAPI.Shipped.txt
@@ -38,7 +38,7 @@ Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.HttpMessageHa
 Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.HttpMessageHandlerFactory.set -> void
 Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.Proxy.get -> System.Net.IWebProxy?
 Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.Proxy.set -> void
-Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.Url.get -> System.Uri!
+Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.Url.get -> System.Uri?
 Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.Url.set -> void
 Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.WebSocketConfiguration.get -> System.Action<System.Net.WebSockets.ClientWebSocketOptions!>?
 Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionOptions.WebSocketConfiguration.set -> void