Create monthly single release task

1 files changed, 2 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 0d29553c..da5358f0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,6 +18,7 @@ group :nanoc do
   gem 'builder'
 end
 
-group :test do
+group :test, :development do
   gem 'scss_lint', require: false
+  gem 'highline'
 end