diff --git a/test/load-generator/requirements.txt b/test/load-generator/requirements.txt
index 46c38e1fd81..9882cfda6c8 100644
--- a/test/load-generator/requirements.txt
+++ b/test/load-generator/requirements.txt
@@ -1,3 +1,4 @@
 matplotlib
 numpy
 pandas
+fonttools>=4.43.0 # not directly required, pinned by Snyk to avoid a vulnerability