diff --git a/src/Tribufu.Example/Program.cs b/src/Tribufu.Example/Program.cs
index c6af9cf..cd76174 100644
--- a/src/Tribufu.Example/Program.cs
+++ b/src/Tribufu.Example/Program.cs
@@ -2,6 +2,8 @@
 // SPDX-License-Identifier: MIT
 
 using dotenv.net;
+using System;
+using System.Threading.Tasks;
 using Tribufu.Generated.Client;
 using Tribufu.Logging;