diff --git a/lib/jekyll/configuration.rb b/lib/jekyll/configuration.rb
index 8a1d7323..7f1148a6 100644
--- a/lib/jekyll/configuration.rb
+++ b/lib/jekyll/configuration.rb
@@ -42,7 +42,7 @@ module Jekyll
       # Serving
       'detach'        => false,          # default to not detaching the server
       'port'          => '4000',
-      'host'          => '0.0.0.0',
+      'host'          => '127.0.0.1',
       'baseurl'       => '',
 
       # Backwards-compatibility options