diff --git a/cypress/e2e/readme/main.py b/cypress/e2e/readme/main.py
index e312e4c9a9..21df44e750 100644
--- a/cypress/e2e/readme/main.py
+++ b/cypress/e2e/readme/main.py
@@ -1 +1,5 @@
 import chainlit as cl  # noqa: F401
+
+@cl.on_message
+async def on_message(msg):
+    pass
\ No newline at end of file