diff --git a/tools/viewer/requirements.txt b/tools/viewer/requirements.txt
index ef01b6f..23f66ce 100644
--- a/tools/viewer/requirements.txt
+++ b/tools/viewer/requirements.txt
@@ -28,5 +28,5 @@ more-itertools==8.4.0
     #   jaraco-functools
 six==1.15.0
     # via cheroot
-werkzeug==3.0.1
+werkzeug==3.0.3
     # via flask