diff --git a/requirements.txt b/requirements.txt
index be84431..0513321 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ numpy>=1.13.0
 pandas>=0.23.0
 pydantic>=1.6
 pyxtension>=1.12
-msgpack>=0.5.0
\ No newline at end of file
+msgpack>=0.5.0
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file