diff --git a/Lib/asyncio/queues.py b/Lib/asyncio/queues.py
index 2a8d3e7..c96b4a0 100644
--- a/Lib/asyncio/queues.py
+++ b/Lib/asyncio/queues.py
@@ -2,6 +2,7 @@
 
 import collections
 import heapq
+import warnings
 
 from . import events
 from . import locks
@@ -34,6 +35,9 @@
             self._loop = events.get_event_loop()
         else:
             self._loop = loop
+            warnings.warn("The loop argument is deprecated since Python 3.8, "
+                          "and scheduled for removal in Python 3.10.",
+                          DeprecationWarning, stacklevel=2)
         self._maxsize = maxsize
 
         # Futures.