diff --git a/setup.py b/setup.py
index 607f1dadf..39482d383 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@ install_requires = [
     'protego>=0.1.15',
     'itemadapter>=0.1.0',
     'h2>=3.2.0',
-    'typing-extensions>=3.7',
+    'typing-extensions>=3.7.4',
 ]
 extras_require = {}
 
diff --git a/tox.ini b/tox.ini
index 3f6fd1224..0a88ed8af 100644
--- a/tox.ini
+++ b/tox.ini
@@ -74,7 +74,7 @@ deps =
     queuelib==1.4.2
     service_identity==16.0.0
     Twisted[http2]==17.9.0
-    typing-extensions==3.7
+    typing-extensions==3.7.4
     w3lib==1.17.0
     zope.interface==4.1.3
     -rtests/requirements-py3.txt