diff --git a/config/environments/test.rb b/config/environments/test.rb
index 272f9be944..ab3fa19c3d 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -46,8 +46,8 @@
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
-  # Run jobs with an in-process thread pool.
-  config.active_job.queue_adapter = :async
+  # Inline ActiveJob when testing:
+  config.active_job.queue_adapter = :inline
 
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr