diff --git a/setup.py b/setup.py
index f908a469..4b0e072c 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@ from setuptools import setup
 setup(
     name="Flask",
     install_requires=[
-        "Werkzeug >= 2.0",
+        "Werkzeug >= 2.0, <2.1",
         "Jinja2 >= 3.0",
         "itsdangerous >= 2.0",
         "click >= 7.1.2",