diff --git a/activesupport/lib/active_support/cache/strategy/local_cache.rb b/activesupport/lib/active_support/cache/strategy/local_cache.rb
index 5f6fe224167b12fe4961f2432ed706c481b840c1..66df7ad7f9b8f77eeaaf2830688c42f2166f88f1 100644
--- a/activesupport/lib/active_support/cache/strategy/local_cache.rb
+++ b/activesupport/lib/active_support/cache/strategy/local_cache.rb
@@ -1,4 +1,5 @@
 require 'active_support/core_ext/object/duplicable'
+require 'active_support/inflector/methods active_support/core_ext/string/inflections'
 
 module ActiveSupport
   module Cache