diff --git a/.travis.yml b/.travis.yml
index b5ba80240..2d6e4735f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ language: csharp
 dist: xenial
 sudo: required
 mono: none
-dotnet: 3.1
+dotnet: 5.0
 script:
   - dotnet restore
   - dotnet build
\ No newline at end of file
diff --git a/Source/Framework/Networking/SSLSocket.cs b/Source/Framework/Networking/SSLSocket.cs
index b38703154..580befaae 100644
--- a/Source/Framework/Networking/SSLSocket.cs
+++ b/Source/Framework/Networking/SSLSocket.cs
@@ -79,7 +79,7 @@ namespace Framework.Networking
         {
             try
             {
-                await _stream.AuthenticateAsServerAsync(certificate, false, SslProtocols.Tls, false);
+                await _stream.AuthenticateAsServerAsync(certificate, false, SslProtocols.Tls12, false);
             }
             catch(Exception ex)
             {