diff --git a/metagpt/__init__.py b/metagpt/__init__.py
index 7e0247553..16359ca19 100644
--- a/metagpt/__init__.py
+++ b/metagpt/__init__.py
@@ -3,6 +3,7 @@
 # @Time    : 2023/4/24 22:26
 # @Author  : alexanderwu
 # @File    : __init__.py
+# @Desc    : mashenquan, 2023/8/22. Add `Message` for importing by external projects.
 
 from metagpt.schema import Message