diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 456fed0..fa74426
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ numpy >= 1.16.6
 scipy >= 1.2.3
 ase >= 3.17.0
 bs4
+pillow>=10.2.0 # not directly required, pinned by Snyk to avoid a vulnerability