diff --git a/Gemfile b/Gemfile
index 4a9d77f..3a1ebf3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1 +1,2 @@
-gem 'github-pages'
+source 'https://rubygems.org'
+gem 'github-pages'
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index e526ac8..caf783c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,4 +1,5 @@
 GEM
+  remote: https://rubygems.org/
   specs:
     RedCloth (4.2.9)
     activesupport (4.2.0.beta1)