3 files changed, 1 insertions, 4 deletions
diff --git a/actionmailer/lib/action_mailer.rb b/actionmailer/lib/action_mailer.rb
index e45a1cd5ff..32e6183ff6 100644
--- a/actionmailer/lib/action_mailer.rb
+++ b/actionmailer/lib/action_mailer.rb
@@ -26,10 +26,9 @@ require 'action_view'
 require 'action_mailer/version'
 
 # Common Active Support usage in Action Mailer
+require 'active_support/rails'
 require 'active_support/core_ext/class'
-require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/module/attr_internal'
-require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/string/inflections'
 require 'active_support/lazy_load_hooks'
 
diff --git a/actionmailer/lib/action_mailer/base.rb b/actionmailer/lib/action_mailer/base.rb
index 150d435140..900da9697e 100644
--- a/actionmailer/lib/action_mailer/base.rb
+++ b/actionmailer/lib/action_mailer/base.rb
@@ -1,6 +1,5 @@
 require 'mail'
 require 'action_mailer/collector'
-require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/string/inflections'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/module/anonymous'
diff --git a/actionmailer/lib/action_mailer/test_case.rb b/actionmailer/lib/action_mailer/test_case.rb
index 529140dfad..108969ed4c 100644
--- a/actionmailer/lib/action_mailer/test_case.rb
+++ b/actionmailer/lib/action_mailer/test_case.rb
@@ -1,5 +1,4 @@
 require 'active_support/test_case'
-require 'active_support/core_ext/class/attribute'
 
 module ActionMailer
   class NonInferrableMailerError < ::StandardError