diff --git a/Gemfile b/Gemfile
index 3f4ecbd..f31065e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,16 @@
 source 'https://rubygems.org'
+require 'json'
+require 'open-uri'
 
-# Specify your gem's dependencies in jekyll_seo_tags.gemspec
 gemspec
 
-gem 'github-pages', ">= 44"
-gem 'jekyll', "~> 3.0"
+group :test do
+  versions = JSON.parse(open('https://pages.github.com/versions.json').read)
+  versions.delete('ruby')
+  versions.delete('jekyll-seo-tag')
+  versions.delete('github-pages')
+
+  versions.each do |dep, version|
+    gem dep, version
+  end
+end