diff --git a/lib/async/task.rb b/lib/async/task.rb
index ceedb357..b50a4e3a 100644
--- a/lib/async/task.rb
+++ b/lib/async/task.rb
@@ -246,6 +246,9 @@ def stop(later = false)
 			if @defer_stop == false
 				# Don't stop now... but update the state so we know we need to stop later.
 				@defer_stop = true
+				
+				stop_children(false)
+				
 				return false
 			end