diff --git a/requirements_dev.txt b/requirements_dev.txt
index aab6675a..be3a093a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -17,3 +17,4 @@ geojson
 matplotlib
 pre-commit
 tornado>=6.3.3 # not directly required, pinned by Snyk to avoid a vulnerability
+jupyter-server>=2.7.2 # not directly required, pinned by Snyk to avoid a vulnerability