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-rw-r--r--activemodel/lib/active_model/dirty.rb1
1 files changed, 0 insertions, 1 deletions
diff --git a/activemodel/lib/active_model/dirty.rb b/activemodel/lib/active_model/dirty.rb
index 9c8ca5d93f..afba9bab0d 100644
--- a/activemodel/lib/active_model/dirty.rb
+++ b/activemodel/lib/active_model/dirty.rb
@@ -1,6 +1,5 @@
require 'active_support/hash_with_indifferent_access'
require 'active_support/core_ext/object/duplicable'
-require 'active_support/core_ext/string/filters'
module ActiveModel
# == Active \Model \Dirty