diff --git a/requirements.txt b/requirements.txt
index b42d21a..26013b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ Flask==0.8
 numpy==1.6.1
 SQLAlchemy==0.7.8
 Flask==0.8
+werkzeug>=3.0.6 # not directly required, pinned by Snyk to avoid a vulnerability