diff --git a/requirements.txt b/requirements.txt
index fef4bbf2..2566e348 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+Werkzeug<3.0.0
 APScheduler>=3.6.3,<3.11.0
 Babel>=1.3,<3.0
 Flask-Babel>=0.11.1,<3.1.0