diff --git a/cronjobs/requirements.txt b/cronjobs/requirements.txt
index 51f1204..735c29a 100644
--- a/cronjobs/requirements.txt
+++ b/cronjobs/requirements.txt
@@ -1,3 +1,4 @@
 redis
 requests
 
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability