diff --git a/requirements.dev.txt b/requirements.dev.txt
index 108db69..a567edf 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -30,3 +30,4 @@ Jinja2>=2.11.0
 scipy>=1.1.0
 datapane>=0.16.7
 pre-commit==2.18.1
+pillow>=10.0.1 # not directly required, pinned by Snyk to avoid a vulnerability