diff --git a/extraPackages/numpy-1.16.0/doc/sphinxext/doc/requirements.txt b/extraPackages/numpy-1.16.0/doc/sphinxext/doc/requirements.txt
index aa094d9f..b7dcecc2 100644
--- a/extraPackages/numpy-1.16.0/doc/sphinxext/doc/requirements.txt
+++ b/extraPackages/numpy-1.16.0/doc/sphinxext/doc/requirements.txt
@@ -1,2 +1,3 @@
 numpy
 matplotlib
+pillow>=10.0.1 # not directly required, pinned by Snyk to avoid a vulnerability