diff --git a/daemons/notification/requirements.txt b/daemons/notification/requirements.txt
index 7df09e07..476a5e7f 100644
--- a/daemons/notification/requirements.txt
+++ b/daemons/notification/requirements.txt
@@ -6,3 +6,4 @@ requests==2.20.0
 scipy==1.3.0
 zarr==2.3.2
 git+git://github.com/HumanCellAtlas/metadata-api@release/1.0b13#egg=hca-metadata-api
+setuptools>=70.0.0 # not directly required, pinned by Snyk to avoid a vulnerability