diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb
index 0856e4f568a3b0c8623b8f9e7f259bebc5e9c835..67e9b0103f4b260c229e7cf568edc2e8171cec94 100644
--- a/activesupport/lib/active_support/callbacks.rb
+++ b/activesupport/lib/active_support/callbacks.rb
@@ -1,7 +1,6 @@
 require 'active_support/core_ext/array/wrap'
 require 'active_support/core_ext/class/inheritable_attributes'
 require 'active_support/core_ext/kernel/reporting'
-require 'active_support/concern'
 
 module ActiveSupport
   # Callbacks are hooks into the lifecycle of an object that allow you to trigger logic
diff --git a/activesupport/lib/active_support/testing/setup_and_teardown.rb b/activesupport/lib/active_support/testing/setup_and_teardown.rb
index 137e2629ff7f3127fe77024e0a21fe4524421d5b..b738ef334c939c9c6e08792790e2f0dad4409574 100644
--- a/activesupport/lib/active_support/testing/setup_and_teardown.rb
+++ b/activesupport/lib/active_support/testing/setup_and_teardown.rb
@@ -1,4 +1,3 @@
-require 'active_support/callbacks'
 module ActiveSupport
   module Testing
     module SetupAndTeardown