diff --git a/requirements-dev.txt b/requirements-dev.txt
index c744cad..b036b94 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,3 +5,4 @@ bandit
 flake8
 pytest
 pytest-cov
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability