diff --git a/requirements.txt b/requirements.txt
index bfb22cf..dce2135 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@ google-cloud-vision
 vertexai
 werkzeug
 
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability