diff --git a/meshtastic/stream_interface.py b/meshtastic/stream_interface.py
index ca26f3a..471111b 100644
--- a/meshtastic/stream_interface.py
+++ b/meshtastic/stream_interface.py
@@ -1,5 +1,6 @@
 """Stream Interface base class
 """
+import io
 import logging
 import threading
 import time