diff --git a/tests/apps/python-flask/requirements.txt b/tests/apps/python-flask/requirements.txt
index b51ce4d46..48593f67f 100644
--- a/tests/apps/python-flask/requirements.txt
+++ b/tests/apps/python-flask/requirements.txt
@@ -1,5 +1,5 @@
 Flask==1.1.1
 Jinja2==2.11.1
-Werkzeug==0.16.1
+Werkzeug==1.0.0
 gunicorn==20.0.4