diff --git a/requirements.txt b/requirements.txt
index cb43221..6f6b1ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ MarkupSafe==2.0.1
 rsconnect-python==1.6.0
 six==1.16.0
 Werkzeug==2.0.2
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability