diff --git a/requirements.txt b/requirements.txt
index 5ad32fb..6df6807 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 black
 pre-commit
-pytest-cov
\ No newline at end of file
+pytest-cov
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file