diff --git a/requirements.txt b/requirements.txt
index b0ba752..7f5082e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -118,3 +118,4 @@ webencodings==0.5.1
 websocket-client==1.5.0
 widgetsnbextension==4.0.5
 XlsxWriter==3.0.8
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability