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-rw-r--r--actionmailer/lib/action_mailer/version.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/actionmailer/lib/action_mailer/version.rb b/actionmailer/lib/action_mailer/version.rb
index 06f80a8fdc..4549d6eb57 100644
--- a/actionmailer/lib/action_mailer/version.rb
+++ b/actionmailer/lib/action_mailer/version.rb
@@ -1,4 +1,6 @@
-require_relative 'gem_version'
+# frozen_string_literal: true
+
+require_relative "gem_version"
module ActionMailer
# Returns the version of the currently loaded Action Mailer as a