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-rw-r--r--lib/arel/visitors.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/arel/visitors.rb b/lib/arel/visitors.rb
index 9bf5170463..a3404cf992 100644
--- a/lib/arel/visitors.rb
+++ b/lib/arel/visitors.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require 'arel/visitors/visitor'
require 'arel/visitors/depth_first'
require 'arel/visitors/to_sql'