diff --git a/a_sync/executor.py b/a_sync/executor.py
index 45db6831..efd680d9 100644
--- a/a_sync/executor.py
+++ b/a_sync/executor.py
@@ -313,9 +313,11 @@ def __init__(
         self.__init_mixin__()
 
 
+AsyncExecutor = Union[AsyncThreadPoolExecutor, AsyncProcessPoolExecutor]
+
 # For backward-compatibility
-ProcessPoolExecutor = AsyncProcessPoolExecutor
 ThreadPoolExecutor = AsyncThreadPoolExecutor
+ProcessPoolExecutor = AsyncProcessPoolExecutor
 
 # Pruning thread pool