diff --git a/doc/requirements.txt b/doc/requirements.txt
index 4179db2..d43465d 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -8,4 +8,4 @@ Jinja2==2.11.1
 MarkupSafe==1.1.1
 pkg-resources==0.0.0
 pytz==2019.3
-Werkzeug==0.16.1
+Werkzeug==2.2.3