diff --git a/Gemfile b/Gemfile
index 5f85440b..702cc5dc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,8 +20,6 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-source 'https://rubygems.org'
-
 gem 'rubyzip', '>= 1.1.3'
 gem 'zip-zip'
 gem 'simple_enum'