diff --git a/docs/python/requirements.txt b/docs/python/requirements.txt
index 8bfb4e15bdea5..1433464eb4b16 100644
--- a/docs/python/requirements.txt
+++ b/docs/python/requirements.txt
@@ -4,3 +4,4 @@ pyquickhelper
 tensorflow
 tensorflow-onnx
 
+pillow>=10.2.0 # not directly required, pinned by Snyk to avoid a vulnerability