diff --git a/python_insecure_deserialization_lab/requirements.txt b/python_insecure_deserialization_lab/requirements.txt
index 88caa76..c9658d4 100644
--- a/python_insecure_deserialization_lab/requirements.txt
+++ b/python_insecure_deserialization_lab/requirements.txt
@@ -1,2 +1,3 @@
 ruamel.yaml
 flask
+werkzeug>=3.0.1 # not directly required, pinned by Snyk to avoid a vulnerability