diff --git a/README.md b/README.md
index db56ccb..fa3a5f2 100644
--- a/README.md
+++ b/README.md
@@ -213,6 +213,7 @@ async def example() -> None:
             agent="echo",
             input=[
                 Message(
+                    role="user",
                     parts=[MessagePart(content="Howdy to echo from client!!", content_type="text/plain")]
                 )
             ],