diff --git a/Gemfile b/Gemfile
index df5651b..73f7a16 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source 'http://rubygems.org'
+source 'https://rubygems.org'
 
 # Middleman
 gem 'middleman', '~>3.3.10'
diff --git a/Gemfile.lock b/Gemfile.lock
index e3931cd..c22d1d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,5 +1,5 @@
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     activesupport (4.1.10)
       i18n (~> 0.6, >= 0.6.9)