diff --git a/Gemfile b/Gemfile
index 7434b39..aec6e78 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,2 +1,5 @@
 source "https://rubygems.org"
-gem 'github-pages', group: :jekyll_plugins
+gem 'github-pages'
+gem 'therubyracer'
+gem 'jekyll-less'
+gem 'jekyll-coffeescript'