1 files changed, 1 insertions, 0 deletions
diff --git a/setup.cfg b/setup.cfg
index 80477f8a4..92c0006c0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -39,6 +39,7 @@ package_dir =
 install_requires =
     importlib-metadata;python_version<"3.8"
     greenlet != 0.4.17;python_version>='3' and (platform_machine=='aarch64' or (platform_machine=='ppc64le' or (platform_machine=='x86_64' or (platform_machine=='amd64' or (platform_machine=='AMD64' or (platform_machine=='win32' or platform_machine=='WIN32'))))))
+    typing-extensions >= 4;python_version<"3.11"
 
 [options.extras_require]
 asyncio =