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-rw-r--r--activerecord/lib/active_record/attribute_methods/serialization.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb
index 4d9aff76cc..0f267e3a34 100644
--- a/activerecord/lib/active_record/attribute_methods/serialization.rb
+++ b/activerecord/lib/active_record/attribute_methods/serialization.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
module ActiveRecord
module AttributeMethods
module Serialization