diff --git a/dev-requirements.txt b/dev-requirements.txt
index cbcbb9c..82baf05 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,4 +3,5 @@ flake8
 coverage
 pytest
 pytest-cov
-networkx
\ No newline at end of file
+networkx
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file