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-rw-r--r--actionmailer/test/base_test.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actionmailer/test/base_test.rb b/actionmailer/test/base_test.rb
index 5bba0e23d3..8d60e028cb 100644
--- a/actionmailer/test/base_test.rb
+++ b/actionmailer/test/base_test.rb
@@ -1,5 +1,7 @@
# encoding: utf-8
require 'abstract_unit'
+require 'set'
+
require 'active_support/time'
require 'mailers/base_mailer'