diff --git a/VpSharp/src/Internal/Connection.cs b/VpSharp/src/Internal/Connection.cs
index 121321e..7aa6f09 100644
--- a/VpSharp/src/Internal/Connection.cs
+++ b/VpSharp/src/Internal/Connection.cs
@@ -1,4 +1,4 @@
-using System.Net.Sockets;
+using System.Net.Sockets;
 using System.Runtime.InteropServices;
 using VpSharp.NativeApi;
 
@@ -93,7 +93,7 @@ internal class Connection
         }
     }
 
-    private static void HandleTimeout(object state)
+    private static void HandleTimeout(object? state)
     {
         (state as Connection)?.HandleTimeout();
     }