diff --git a/src/Tribufu/TribufuApi.cs b/src/Tribufu/TribufuApi.cs
index d0a97eb..df38a47 100644
--- a/src/Tribufu/TribufuApi.cs
+++ b/src/Tribufu/TribufuApi.cs
@@ -14,7 +14,7 @@ namespace Tribufu
     /// <remarks>
     /// Use this class to interact with the Tribufu API.
     /// </remarks>
-    public class TribufuApi : TribufuGeneratedApi
+    public sealed class TribufuApi : TribufuGeneratedApi
     {
         /// <summary>
         /// The default base URL for the Tribufu API.