diff --git a/requirements.txt b/requirements.txt
index b7faa338..d3643e20 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,3 +27,4 @@ gunicorn==20.0.4
 # Tests
 django-nose==1.4.6
 factory_boy==2.12.0
+pillow>=9.0.0 # not directly required, pinned by Snyk to avoid a vulnerability