diff --git a/requirements_dev.txt b/requirements_dev.txt
index b621bcf..afe86d1 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -10,3 +10,4 @@ twine
 Click
 pytest
 black
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability