diff --git a/Gemfile b/Gemfile
index 16c23c7..1700579 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
+source :rubygems
+
 group :development do
   gem 'rspec'
 end
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 02a6402..d2ea896 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,4 +1,5 @@
 GEM
+  remote: http://rubygems.org/
   specs:
     diff-lcs (1.1.2)
     rspec (2.5.0)