diff --git a/py/setup.py b/py/setup.py
index c805cbd66d389..2295bc8c84ec3 100755
--- a/py/setup.py
+++ b/py/setup.py
@@ -72,7 +72,7 @@
                  'selenium.webdriver.support', ],
     'include_package_data': True,
     'install_requires': [
-        "typing_extension~= 4.9",
+        "typing_extensions~= 4.9",
         "urllib3[socks]>=1.26,<3",
         "trio~=0.17",
         "trio-websocket~=0.9",