diff --git a/Gemfile b/Gemfile
index 0aea8a9925..743d18eca7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,3 @@
-
+source "https://rubygems.org"
 # Added at 2017-12-05 23:01:55 -0800 by boneskull:
 gem "jekyll", "~> 3.6"