diff --git a/USAGE b/USAGE
index 6e343cc..114c3e6 100644
--- a/USAGE
+++ b/USAGE
@@ -3,6 +3,8 @@ Install notes
 =============
 
 ~~~
+npm install gitbook
+sudo npm install gitbook-cli -g
 npm install gitbook-plugin-autocover
 npm install gitbook-plugin-github
 npm install gitbook-plugin-toc