diff --git a/Gemfile b/Gemfile
index 86aa24e..0ac6c21 100755
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source 'http://rubygems.org'
+source 'https://rubygems.org'
 
 # Specify your gem's dependencies in omniauth-salesforce.gemspec
 gemspec