diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index ad81cb2d..2b175071
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,3 +9,4 @@ Pillow
 # ecdsa
 # paramiko
 # pycrypto
+fonttools>=4.61.0 # not directly required, pinned by Snyk to avoid a vulnerability