diff --git a/stdlib/3/concurrent/futures/thread.pyi b/stdlib/3/concurrent/futures/thread.pyi
index 4b9a8bf6dfbd..e8116c6da791 100644
--- a/stdlib/3/concurrent/futures/thread.pyi
+++ b/stdlib/3/concurrent/futures/thread.pyi
@@ -1,3 +1,4 @@
+import queue
 import sys
 from typing import Any, Callable, Generic, Iterable, Mapping, Optional, Tuple, TypeVar
 
@@ -13,6 +14,10 @@ if sys.version_info >= (3, 9):
 _S = TypeVar("_S")
 
 class ThreadPoolExecutor(Executor):
+    if sys.version_info >= (3, 7):
+        _work_queue: queue.SimpleQueue
+    else:
+        _work_queue: queue.Queue
     if sys.version_info >= (3, 7):
         def __init__(
             self,