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-rw-r--r--activesupport/lib/active_support/core_ext/class/subclasses.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/class/subclasses.rb b/activesupport/lib/active_support/core_ext/class/subclasses.rb
index 545ad7fb3e..ce7b422cfb 100644
--- a/activesupport/lib/active_support/core_ext/class/subclasses.rb
+++ b/activesupport/lib/active_support/core_ext/class/subclasses.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require_relative "../module/anonymous"
require_relative "../module/reachable"