1 files changed, 4 insertions, 4 deletions
diff --git a/actioncable/lib/action_cable/subscription_adapter/async.rb b/actioncable/lib/action_cable/subscription_adapter/async.rb
index 85d4892e4c..cca6894289 100644
--- a/actioncable/lib/action_cable/subscription_adapter/async.rb
+++ b/actioncable/lib/action_cable/subscription_adapter/async.rb
@@ -4,17 +4,17 @@ module ActionCable
   module SubscriptionAdapter
     class Async < Inline # :nodoc:
       private
-        def subscriber_map
-          @subscriber_map ||= AsyncSubscriberMap.new
+        def new_subscriber_map
+          AsyncSubscriberMap.new
         end
 
         class AsyncSubscriberMap < SubscriberMap
           def add_subscriber(*)
-            ::EM.next_tick { super }
+            Concurrent.global_io_executor.post { super }
           end
 
           def invoke_callback(*)
-            ::EM.next_tick { super }
+            Concurrent.global_io_executor.post { super }
           end
         end
     end