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-rw-r--r--actionmailer/lib/action_mailer.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionmailer/lib/action_mailer.rb b/actionmailer/lib/action_mailer.rb
index 211190560a..8e59f033d0 100644
--- a/actionmailer/lib/action_mailer.rb
+++ b/actionmailer/lib/action_mailer.rb
@@ -25,6 +25,7 @@ require "abstract_controller"
require "action_mailer/version"
# Common Active Support usage in Action Mailer
+require "active_support"
require "active_support/rails"
require "active_support/core_ext/class"
require "active_support/core_ext/module/attr_internal"