diff --git a/requirements.txt b/requirements.txt
index 06f66dd..6e23499 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 requests==2.22.0
-websocket_client==0.57.0
\ No newline at end of file
+websocket_client==0.57.0
+idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file