diff --git a/actioncable/lib/action_cable/server/worker.rb b/actioncable/lib/action_cable/server/worker.rb
index 7460472551..43639c27af 100644
--- a/actioncable/lib/action_cable/server/worker.rb
+++ b/actioncable/lib/action_cable/server/worker.rb
@@ -25,7 +25,7 @@ module ActionCable
       # Stop processing work: any work that has not already started
       # running will be discarded from the queue
       def halt
-        @executor.kill
+        @executor.shutdown
       end
 
       def stopping?