diff --git a/requirements/requirements_tests.txt b/requirements/requirements_tests.txt
index 721de2fc..b1c8e370 100644
--- a/requirements/requirements_tests.txt
+++ b/requirements/requirements_tests.txt
@@ -1,2 +1,3 @@
 mock
 pytest>=4.4.1
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability