diff --git a/requirements.txt b/requirements.txt
index 07f0b8300..4c0f74a53 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,4 +22,5 @@ Flask-CacheBuster
 flask-cors
 waitress
 lxml
-packaging
\ No newline at end of file
+packaging
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file