diff --git a/app_clients/elasticsearch-stress/elasticsearch-stress-test/requirements.txt b/app_clients/elasticsearch-stress/elasticsearch-stress-test/requirements.txt
index 174c3f8b..20e2e935 100644
--- a/app_clients/elasticsearch-stress/elasticsearch-stress-test/requirements.txt
+++ b/app_clients/elasticsearch-stress/elasticsearch-stress-test/requirements.txt
@@ -1 +1,2 @@
 elasticsearch
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability