diff --git a/README.md b/README.md
index c19aad5..3069e60 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ Although not feature complete yet, you can begin using it to deploy or re-stack
 ```
 git clone https://github.com/devsecops/restacker.git
 cd restacker/source
+gem install bundler
+bundle install
 gem build restacker.gemspec
 gem install restacker
 # if you're using rbenv, then: rbenv rehash