diff --git a/website/Gemfile b/website/Gemfile
index 7ef6a8f31..2b35e2810 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"