diff --git a/dev-requirements.txt b/dev-requirements.txt
index dfd95ea..995de4b 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -6,4 +6,5 @@ httpretty==0.9.7
 parameterized==0.8.1
 pytest-cov
 pytest-ckan
-six>=1.13.0
\ No newline at end of file
+six>=1.13.0
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file