diff --git a/lib/src/serial_port_list.dart b/lib/src/serial_port_list.dart
index a987c04..3c36197 100644
--- a/lib/src/serial_port_list.dart
+++ b/lib/src/serial_port_list.dart
@@ -7,7 +7,7 @@ import 'package:meta/meta.dart';
 import 'package:path/path.dart' as path;
 
 @immutable
-sealed class SerialPortList {
+abstract class SerialPortList {
   factory SerialPortList() {
     if (Platform.isLinux) {
       return const SerialPortListLinux();
diff --git a/pubspec.yaml b/pubspec.yaml
index a28252a..a65bf49 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dart_serial
 description: Dart package that aims to provide a platform-independent serial port API.
-version: 0.1.0-alpha.1
+version: 0.1.0-alpha.2
 license: MIT
 repository: https://github.com/frickly-systems/dart_serial