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-rw-r--r--activesupport/lib/active_support/memoizable.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/memoizable.rb b/activesupport/lib/active_support/memoizable.rb
index 2b85fd7be4..fa6db683d4 100644
--- a/activesupport/lib/active_support/memoizable.rb
+++ b/activesupport/lib/active_support/memoizable.rb
@@ -1,3 +1,6 @@
+require 'active_support/core_ext/object/metaclass'
+require 'active_support/core_ext/module/aliasing'
+
module ActiveSupport
module SafelyMemoizable
def safely_memoize(*symbols)