diff --git a/requirements-dev.txt b/requirements-dev.txt
index 862d37c..9322fdf 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -31,4 +31,5 @@ wheel >= 0.37
 xmltodict >= 0.12
 
 # test requirements for extra packages
-zarr >= 2.13.3
\ No newline at end of file
+zarr >= 2.13.3
+jupyter-server>=2.7.2 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file