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-rw-r--r--test/unit/test_waiter.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/unit/test_waiter.rb b/test/unit/test_waiter.rb
index 0995de2..a20994b 100644
--- a/test/unit/test_waiter.rb
+++ b/test/unit/test_waiter.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'unicorn'
 require 'unicorn/select_waiter'