diff --git a/serial/aio.py b/serial/aio.py
index a4e8357..95cb880 100644
--- a/serial/aio.py
+++ b/serial/aio.py
@@ -21,6 +21,7 @@
 
 class SerialTransport(asyncio.Transport):
     def __init__(self, loop, protocol, serial_instance):
+        super().__init__()
         self._loop = loop
         self._protocol = protocol
         self.serial = serial_instance