diff --git a/website/Gemfile b/website/Gemfile
index 936305b5e..54e8cc74c 100644
--- a/website/Gemfile
+++ b/website/Gemfile
@@ -1,3 +1,5 @@
 source 'https://rubygems.org'
 
+ruby '2.2.2'
+
 gem 'middleman-hashicorp', github: 'hashicorp/middleman-hashicorp'