diff --git a/Gemfile b/Gemfile
index 895f32a..b8d15a3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,8 +19,6 @@
 # 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 'acts_as_list'
 gem 'activemodel-serializers-xml'