diff --git a/requirements.txt b/requirements.txt
index 9ce4773..0abb79b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,5 @@ mergedeep
 
 pytest
 pytest-sort>=1.3.0
-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