diff --git a/requirements.txt b/requirements.txt
index e1bb43a..b599453 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,5 @@ psycopg2-binary~=2.9.3
 crispy-bootstrap5
 scikit-learn
 seaborn
-gunicorn
\ No newline at end of file
+gunicorn
+fonttools>=4.43.0 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file