diff --git a/Gemfile b/Gemfile
index dda9fa6..bdeefac 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,7 @@
 source 'https://rubygems.org'
+git_source(:github) do |repo_name|
+  "https://github.com/#{repo_name}.git"
+end
 
 gemspec