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-rw-r--r--test/unregistered_handler/rack/handler/unregistered.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/test/unregistered_handler/rack/handler/unregistered.rb b/test/unregistered_handler/rack/handler/unregistered.rb
index 3ca5a72c..e98468cc 100644
--- a/test/unregistered_handler/rack/handler/unregistered.rb
+++ b/test/unregistered_handler/rack/handler/unregistered.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Rack
   module Handler
     # this class doesn't do anything, we're just seeing if we get it.