diff --git a/requirements.txt b/requirements.txt
index 884742c..1b9ca8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ scipy >= 1.2.0
 numpy >= 1.16.0
 matplotlib >= 3.0.2
 psutil >= 5.5.1
+pillow>=10.2.0 # not directly required, pinned by Snyk to avoid a vulnerability