diff --git a/requirements.txt b/requirements.txt
index 81fe3cd..aded2ac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ requests==2.28.2
 tox
 pytest
 python-dotenv
-flit
\ No newline at end of file
+flit
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file