diff --git a/README.md b/README.md
index 6d9798d..578fa7f 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,9 @@
 # My Blog
 
 ```bash
-nix-shell -p jekyll rubyPackages.sass
-jekyll build
+nix-shell -p bundler
+bundle install
+bundle exec jekyll build
 source ~/.awsrc
 aws s3 sync _site/ s3://quentin.dufour.io/
 ```