diff --git a/requirements-demo.txt b/requirements-demo.txt
index 90fe6a5..d4af572 100644
--- a/requirements-demo.txt
+++ b/requirements-demo.txt
@@ -2,3 +2,4 @@
 jupyterlab>=3.0.5
 pandas>=1.1.5
 matplotlib>=1.15.0
+numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability