diff --git a/README.md b/README.md
index 8a2354b..d859e39 100644
--- a/README.md
+++ b/README.md
@@ -315,7 +315,7 @@
 
 
 #### W interview
-- [Design WhatsApp](https://newsletter.systemdesign.one/p/whatsapp-system-design)
+- [Design WhatsApp](https://newsletter.systemdesign.one/p/whatsapp-system-design), [Part 2](https://newsletter.systemdesign.one/p/design-a-chat-system)
 
 ---