diff --git a/canopen/network.py b/canopen/network.py
index 0f9c9327..4fcb13ec 100644
--- a/canopen/network.py
+++ b/canopen/network.py
@@ -363,6 +363,9 @@ def on_message_received(self, msg):
             # Exceptions in any callbaks should not affect CAN processing
             logger.error(str(e))
 
+    def stop(self) -> None:
+        """Override abstract base method to release any resources."""
+
 
 class NodeScanner:
     """Observes which nodes are present on the bus.