diff --git a/requirements.txt b/requirements.txt
index 6a0c709..cf903ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ seaborn
 scikit-learn
 opencv-python
 gradio
+fonttools>=4.61.0 # not directly required, pinned by Snyk to avoid a vulnerability