diff --git a/examples/rpc-tut6/rpc_client.py b/examples/rpc-tut6/rpc_client.py
index a899bd5c..f3912b36 100644
--- a/examples/rpc-tut6/rpc_client.py
+++ b/examples/rpc-tut6/rpc_client.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import annotations