diff --git a/Gemfile b/Gemfile
index 1475b55..5f0bfcd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,3 +4,4 @@ source 'https://rubygems.org'
 gemspec
 
 gem 'github-pages'
+gem 'jekyll', "~> 3.0"