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-rw-r--r--activesupport/lib/active_support/notifications/instrumenter.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/notifications/instrumenter.rb b/activesupport/lib/active_support/notifications/instrumenter.rb
index e11e2e0689..e99f5ee688 100644
--- a/activesupport/lib/active_support/notifications/instrumenter.rb
+++ b/activesupport/lib/active_support/notifications/instrumenter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "securerandom"
module ActiveSupport