diff --git a/Gemfile.lock b/Gemfile.lock
index 6075a88..ad95508 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,5 +1,5 @@
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     CFPropertyList (2.0.17)
       libxml-ruby (>= 1.1.0)