diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 5c54cdaa7086..a7c7514b4200 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -430,6 +430,7 @@ def initialize
     # Check <tt>Rails::Railtie.console</tt> for more info.
     def load_console(app=self)
       require "pp"
+      require "psych/y"
       require "rails/console/app"
       require "rails/console/helpers"
       run_console_blocks(app)