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-rw-r--r--activerecord/lib/active_record/explain_subscriber.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/explain_subscriber.rb b/activerecord/lib/active_record/explain_subscriber.rb
index abd8cfc8f2..07a412a8a1 100644
--- a/activerecord/lib/active_record/explain_subscriber.rb
+++ b/activerecord/lib/active_record/explain_subscriber.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require "active_support/notifications"
require "active_record/explain_registry"