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-rw-r--r--examples/watcher.ru1
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/watcher.ru b/examples/watcher.ru
index a3e7fdb..e2aa97c 100644
--- a/examples/watcher.ru
+++ b/examples/watcher.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Sample standalone Rack application, recommended use is with Zbatery
 # See zbatery.conf.rb
 require "raindrops"