diff --git a/requirements-to-freeze.txt b/requirements-to-freeze.txt
index 991e859..f925be9 100644
--- a/requirements-to-freeze.txt
+++ b/requirements-to-freeze.txt
@@ -8,3 +8,4 @@ lxml
 pyquery
 requests
 soco
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability