diff --git a/requirements.txt b/requirements.txt
index de28156..e5bf3b9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 requests >= 2.22.0, <3
 web3 >= 4.8.1, <6
+websockets>=10.0 # not directly required, pinned by Snyk to avoid a vulnerability