diff --git a/SlackNet/IWebSocket.cs b/SlackNet/IWebSocket.cs
index 93fb38f..4c272fc 100644
--- a/SlackNet/IWebSocket.cs
+++ b/SlackNet/IWebSocket.cs
@@ -17,7 +17,7 @@ public interface IWebSocket : IDisposable
         IObservable<string> Messages { get; }
     }
 
-    class WebSocketWrapper : IWebSocket
+    public class WebSocketWrapper : IWebSocket
     {
         private readonly WebSocket _webSocket;
 
diff --git a/SlackNet/WebSocketFactory.cs b/SlackNet/WebSocketFactory.cs
index a65387e..5710700 100644
--- a/SlackNet/WebSocketFactory.cs
+++ b/SlackNet/WebSocketFactory.cs
@@ -1,4 +1,5 @@
-using WebSocket4Net;
+using System.Security.Authentication;
+using WebSocket4Net;
 
 namespace SlackNet
 {
@@ -9,6 +10,6 @@ public interface IWebSocketFactory
 
     class WebSocketFactory : IWebSocketFactory
     {
-        public IWebSocket Create(string uri) => new WebSocketWrapper(new WebSocket(uri));
+        public IWebSocket Create(string uri) => new WebSocketWrapper(new WebSocket(uri, sslProtocols: SslProtocols.Tls12));
     }
 }
\ No newline at end of file