diff --git a/cvpubsubs/listen_default.py b/cvpubsubs/listen_default.py
index 3ec99e0..31a050d 100644
--- a/cvpubsubs/listen_default.py
+++ b/cvpubsubs/listen_default.py
@@ -1,3 +1,4 @@
+import queue
 if False:
     from typing import Any, Optional, queue