diff --git a/Gemfile b/Gemfile
index abd1985..794e027 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source :rubygems
+source 'https://rubygems.org'
 
 gem "cinch", "~> 2.0.3"
 gem "mechanize", "~> 2.5.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index fb21c03..78ed56c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,5 +1,5 @@
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     addressable (2.3.2)
     cinch (2.0.3)