diff --git a/docs/Gemfile b/docs/Gemfile
index 0227eb6f..c684a373 100644
--- a/docs/Gemfile
+++ b/docs/Gemfile
@@ -4,7 +4,7 @@
 source 'https://rubygems.org'
 
 group :development, :test do
-  gem 'jekyll'
+  gem 'jekyll', '< 3'
   gem 'haml'
   gem 'rouge'
   gem 'sass'
diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index dce1b547..4d6c5947 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -118,7 +118,7 @@ DEPENDENCIES
   guard-jekyll-plus
   guard-livereload
   haml
-  jekyll
+  jekyll (< 3)
   jekyll-contentblocks
   nokogiri
   rouge