diff --git a/requirements-test.txt b/requirements-test.txt
index b9b972bebd829..bab5f13090172 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -6,3 +6,4 @@ pylint==1.6.4
 nose==1.3.4
 google_compute_engine
 pika==0.10.0
+pyyaml>=5.4 # not directly required, pinned by Snyk to avoid a vulnerability