diff --git a/app/models/concerns/cable_ready/updatable/memory_cache_debounce_adapter.rb b/app/models/concerns/cable_ready/updatable/memory_cache_debounce_adapter.rb
index fd5f4a64..6fe3019b 100644
--- a/app/models/concerns/cable_ready/updatable/memory_cache_debounce_adapter.rb
+++ b/app/models/concerns/cable_ready/updatable/memory_cache_debounce_adapter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module CableReady
   module Updatable
     class MemoryCacheDebounceAdapter