diff --git a/Gemfile b/Gemfile
index fdf58eb..68532f5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 group :development do
   gem "shoulda", ">= 0"