diff --git a/beginner/flask-app/requirements.txt b/beginner/flask-app/requirements.txt
index 578ac166e6..e21eb8cda1 100644
--- a/beginner/flask-app/requirements.txt
+++ b/beginner/flask-app/requirements.txt
@@ -1 +1,2 @@
 Flask==1.0
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability