diff --git a/README.md b/README.md
index abb78be7..fd77ced1 100644
--- a/README.md
+++ b/README.md
@@ -174,6 +174,8 @@ If you're comfortable getting up and running from a `git clone`, this method is
 #### Environment:
 
 * Sencha Cmd 6.1.2.15
+** Make sure to check (Compass extension) during install
+* Ruby 2.3
 * NPM 3.8.7
 * Node.js 4.0.0