diff --git a/requirements.txt b/requirements.txt
index 6c8610e..aa5b795 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ fastapi[all]
 hypercorn
 pre-commit
 gunicorn==20.1.0
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability