diff --git a/requirements.txt b/requirements.txt
index aee6da4..c89237a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@ jinja2
 pdfkit
 pyinstaller
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
+fonttools>=4.43.0 # not directly required, pinned by Snyk to avoid a vulnerability