Gemfile in cistern-2.2.6 vs Gemfile in cistern-2.2.7

@@ -7,9 +7,10 @@
   gem "guard-rspec", "~> 4.2", require: false
   gem "guard-bundler", "~> 2.0", require: false
   gem "pry-nav"
   gem "rake"
   gem "rspec", "~> 3.3"
+  gem "listen", "~> 3.0.5"
   gem "redis-namespace", "~> 1.4", "< 1.5"
   gem "codeclimate-test-reporter", require: false
 end
 
 group :formatters do