diff --git a/activejob/lib/active_job/test_helper.rb b/activejob/lib/active_job/test_helper.rb
index 5d28dba9c02b8..2d71ac96b61f3 100644
--- a/activejob/lib/active_job/test_helper.rb
+++ b/activejob/lib/active_job/test_helper.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require "active_support/core_ext/class/subclasses"
+require "active_support/testing/assertions"
 
 module ActiveJob
   # Provides helper methods for testing Active Job