diff --git a/requirements.txt b/requirements.txt
index ab999b1..0cd3bc0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,3 +13,4 @@ pytest==6.2.4
 pytest-watch==4.2.0
 pytest-sugar==0.9.4
 pytest-cov==2.12.0
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability