diff --git a/HEAL-notebooks/combined_tutorials/requirements.txt b/HEAL-notebooks/combined_tutorials/requirements.txt
index 22b7f303..5e51c875 100644
--- a/HEAL-notebooks/combined_tutorials/requirements.txt
+++ b/HEAL-notebooks/combined_tutorials/requirements.txt
@@ -8,3 +8,4 @@ r-tidygeocoder
 r-tmap
 r-tidyverse
 #trigger build
+pillow>=10.3.0 # not directly required, pinned by Snyk to avoid a vulnerability