diff --git a/src/Leanetec.EConnect.Client/ClientOptions.cs b/src/Leanetec.EConnect.Client/ClientOptions.cs
index b270cf6..1719a2a 100644
--- a/src/Leanetec.EConnect.Client/ClientOptions.cs
+++ b/src/Leanetec.EConnect.Client/ClientOptions.cs
@@ -2,4 +2,5 @@
 
 public class ClientOptions
 {
+    public int ApiVersion { get; set; } = 1;
 }
\ No newline at end of file