diff --git a/Gemfile b/Gemfile
index e4d780bb614f64cba87c0af27ff59c7476e3dbd6..ed1a8307cb085f47411a2ed6a74354aed477f021 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
 source 'https://rubygems.org'
-gem "sprockets", "~> 3.7"
 gem 'github-pages', group: :jekyll_plugins
+
+gem "sprockets", "~> 3.7"
+gem "webrick", "~> 1.7"