diff --git a/requirements-dev.txt b/requirements-dev.txt
index 946de6c..706acb8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,2 +1,3 @@
 pre-commit>=2.10.1
 pytest>=6.2.2
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability