diff --git a/requirements.txt b/requirements.txt
index 2e3ab066..bd729171 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,3 +21,4 @@ google>=3.0.0
 pyyaml
 protobuf<=3.19.6
 deprecated==1.2.12
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability