diff --git a/docs/format.md b/docs/format.md
index 49cc1ec..a0d2708 100644
--- a/docs/format.md
+++ b/docs/format.md
@@ -64,7 +64,7 @@ system_message = (
 developer_message = (
     DeveloperContent.new()
         .with_instructions("Always respond in riddles")
-        .with_tools(
+        .with_function_tools(
             [
                 ToolDescription.new(
                     "get_current_weather",