diff --git a/Lib/Queue.py b/Lib/Queue.py
index 7b0b328..773b680 100644
--- a/Lib/Queue.py
+++ b/Lib/Queue.py
@@ -62,7 +62,7 @@
             if unfinished <= 0:
                 if unfinished < 0:
                     raise ValueError('task_done() called too many times')
-                self.all_tasks_done.notifyAll()
+                self.all_tasks_done.notify_all()
             self.unfinished_tasks = unfinished
         finally:
             self.all_tasks_done.release()