diff --git a/test_requirements.txt b/test_requirements.txt
index cceaab1b94..49bc3b7d15 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -3,3 +3,4 @@ pytest>=6.2.5
 pytest-cov>=2.12.1
 pytest-xdist>=2.5.0
 filelock>=3.4.2
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability