diff --git a/Gemfile b/Gemfile
index 7b3146e..b8eb985 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "sinatra"
 gem "sinatra-contrib"
diff --git a/Gemfile.lock b/Gemfile.lock
index 7358425..d1c2eb6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
       multi_json (~> 1.0)
 
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     activesupport (3.2.13)
       i18n (= 0.6.1)