diff --git a/README.md b/README.md
index 25fad79..80febfa 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
             role: chat_completion::MessageRole::user,
             content: chat_completion::Content::Text(String::from("What is bitcoin?")),
             name: None,
+            tool_calls: None,
+            tool_call_id: None,
         }],
     );