diff --git a/requirements.txt b/requirements.txt
index 07d28e8..cec2097 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,3 +21,4 @@ six==1.15.0
 toml==0.10.2
 urllib3==1.26.5
 wrapt==1.12.1
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability