diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ Cascade is an open-source platform that automates the full software development
 PM Card → Split → Plan → Implement → PR → Review → Iterate → Merge
 ```
 
+[![Watch the demo](docs/assets/demo-thumbnail.jpg)](https://youtu.be/HMfFtj2i_Mw)
+
 ---
 
 ## 🚀 Quick Start
diff --git a/docs/assets/demo-thumbnail.jpg b/docs/assets/demo-thumbnail.jpg
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