diff --git a/README.md b/README.md
index 8920e5a8..27ae202f 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ Want to see Koop in action? The repository ships with a demo that shows Koops su
 ```bash
 git clone https://github.com/koopjs/koop
 cd koop
+npm install
 npm run demo
 ```