diff --git a/test/requirements.txt b/test/requirements.txt
index ea923af..ae1fbc2 100644
--- a/test/requirements.txt
+++ b/test/requirements.txt
@@ -1 +1,2 @@
 hca==6.3.0
+pyasn1>=0.6.2 # not directly required, pinned by Snyk to avoid a vulnerability