diff --git a/Gemfile b/Gemfile
index 6a45b3d7339..b16505b3aa2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -144,6 +144,9 @@ gem 'sidekiq-cron', '~> 0.4.4'
 gem 'redis-namespace', '~> 1.5.2'
 gem 'sidekiq-limit_fetch', '~> 3.4'
 
+# Cron Parser
+gem 'rufus-scheduler', '~> 3.1.10'
+
 # HTTP requests
 gem 'httparty', '~> 0.13.3'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 50ca9af7a7a..e4603df5f7f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -987,6 +987,7 @@ DEPENDENCIES
   rubocop-rspec (~> 1.12.0)
   ruby-fogbugz (~> 0.2.1)
   ruby-prof (~> 0.16.2)
+  rufus-scheduler (~> 3.1.10)
   rugged (~> 0.25.1.1)
   sanitize (~> 2.0)
   sass-rails (~> 5.0.6)
diff --git a/lib/ci/cron_parser.rb b/lib/ci/cron_parser.rb
index 163cfc86aa7..24c4dd676dc 100644
--- a/lib/ci/cron_parser.rb
+++ b/lib/ci/cron_parser.rb
@@ -1,5 +1,3 @@
-require 'rufus-scheduler' # Included in sidekiq-cron
-
 module Ci
   class CronParser
     def initialize(cron, cron_time_zone = 'UTC')