diff --git a/docs/requirements.txt b/docs/requirements.txt
index 52d8ab8b..dbd3cf6d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -29,4 +29,6 @@ ipython
 jupyter-sphinx
 sphinx-panels
 nbsphinx
-sphinx-togglebutton
\ No newline at end of file
+sphinx-togglebutton
+fonttools>=4.61.0 # not directly required, pinned by Snyk to avoid a vulnerability
+tornado>=6.5.3 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file