diff --git a/readme.md b/readme.md
index 72587a0..5d1ccde 100644
--- a/readme.md
+++ b/readme.md
@@ -14,6 +14,10 @@ Watch the tutorials:
 - <a href="https://youtu.be/bgxxUWqW6WU">Whatsapp API Tutorial: Fix Heroku Session</a>
 - <a href="https://youtu.be/iode8kstDYQ">Whatsapp API Tutorial: Dynamic Message Reply</a>
 
+## Important think
+
+As because Whatsapp regularly makes an update, so we needs to always **use the latest version of whatsapp-web.js**. Some errors may occurs with the old versions, so please try to update the library version before creating an issue.
+
 ### How to use?
 
 - Clone or download this repo