diff --git a/Gemfile b/Gemfile
index 182c1f7c..89f2e1b2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source :rubygems
+source 'https://rubygems.org'
 
 group :development, :test do
   gem 'puppetlabs_spec_helper', :require => false