diff --git a/requirements.txt b/requirements.txt
index 1e7f034..04c3823 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@ twilio~=6.38.1
 faker~=4.0.3
 python-dotenv==0.13.0
 pytest==5.4.1
+werkzeug>=3.0.1 # not directly required, pinned by Snyk to avoid a vulnerability