Run pyupgrade for python 3.7 & 3.8. (#16110)

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/util/ratelimitutils.py b/synapse/util/ratelimitutils.py

index 2ad55ac13e..cde4a0780f 100644
--- a/synapse/util/ratelimitutils.py
+++ b/synapse/util/ratelimitutils.py
@@ -20,6 +20,7 @@ import typing
 from typing import (
     Any,
     Callable,
+    ContextManager,
     DefaultDict,
     Dict,
     Iterator,
@@ -33,7 +34,6 @@ from typing import (
 from weakref import WeakSet
 
 from prometheus_client.core import Counter
-from typing_extensions import ContextManager
 
 from twisted.internet import defer