diff --git a/requirements.txt b/requirements.txt
index ecbbfaa..3f0a8e9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@ scikit-image >= 0.15
 scikit-learn >= 0.20
 snakeviz >= 2.1
 watermark >= 2.2
+jupyter-server>=2.7.2 # not directly required, pinned by Snyk to avoid a vulnerability