diff --git a/config/initializers/99-unicorn.rb b/config/initializers/99-unicorn.rb
index 072283c07..43e8cb75f 100644
--- a/config/initializers/99-unicorn.rb
+++ b/config/initializers/99-unicorn.rb
@@ -5,7 +5,7 @@ if defined? Unicorn::HttpServer
     s.extend(Scheduler::Defer::Unicorn)
   end
 
-  if ENV['UNICORN_ENABLE_OOBGC'] == '1'
+  if ENV['UNICORN_ENABLE_OOBGC'] == '1' && RUBY_VERSION < "2.2.0"
     require 'middleware/unicorn_oobgc'
     Middleware::UnicornOobgc.init
   end