diff --git a/Gemfile b/Gemfile
index f31065e..a215af7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ require 'open-uri'
 
 gemspec
 
-group :test do
+group :development, :test do
   versions = JSON.parse(open('https://pages.github.com/versions.json').read)
   versions.delete('ruby')
   versions.delete('jekyll-seo-tag')