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-rw-r--r--activemodel/lib/active_model/attribute_methods.rb4
1 files changed, 2 insertions, 2 deletions
diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb
index 77e4ce3afe..1963a3fc4e 100644
--- a/activemodel/lib/active_model/attribute_methods.rb
+++ b/activemodel/lib/active_model/attribute_methods.rb
@@ -1,4 +1,4 @@
-require 'thread_safe'
+require 'concurrent'
require 'mutex_m'
module ActiveModel
@@ -350,7 +350,7 @@ module ActiveModel
# significantly (in our case our test suite finishes 10% faster with
# this cache).
def attribute_method_matchers_cache #:nodoc:
- @attribute_method_matchers_cache ||= ThreadSafe::Cache.new(initial_capacity: 4)
+ @attribute_method_matchers_cache ||= Concurrent::Map.new(initial_capacity: 4)
end
def attribute_method_matchers_matching(method_name) #:nodoc: