diff --git a/lib/src/voip.dart b/lib/src/voip.dart
index bae91bb8..6d82ba5a 100644
--- a/lib/src/voip.dart
+++ b/lib/src/voip.dart
@@ -1,17 +1,11 @@
 import 'dart:async';
 import 'dart:core';
-import 'dart:io';
 
-import 'package:flutter/foundation.dart';
-import 'package:flutter/widgets.dart';
-
-import 'package:flutter_webrtc/flutter_webrtc.dart';
+import 'voip_abstract.dart';
 import 'package:sdp_transform/sdp_transform.dart' as sdp_transform;
 
 import '../matrix.dart';
 
-bool get kIsMobile => !kIsWeb && (Platform.isAndroid || Platform.isIOS);
-
 /// The default life time for call events, in millisecond.
 const lifetimeMs = 10 * 1000;
 
diff --git a/lib/src/voip_abstract.dart b/lib/src/voip_abstract.dart
new file mode 100644
index 00000000..392e5d36
--- /dev/null
+++ b/lib/src/voip_abstract.dart
@@ -0,0 +1,116 @@
+import 'dart:io';
+
+class MediaStreamTrack {
+  bool get enabled => false;
+  set enabled(bool value) {}
+  String get kind => throw UnimplementedError();
+  Future<void> stop() async {}
+  Future<void> enableSpeakerphone(bool enable) async {}
+}
+
+class MediaStream {
+  String get id => throw UnimplementedError();
+  List<MediaStreamTrack> getAudioTracks() => throw UnimplementedError();
+  List<MediaStreamTrack> getVideoTracks() => throw UnimplementedError();
+  List<MediaStreamTrack> getTracks() => throw UnimplementedError();
+  Future<void> dispose() async {}
+}
+
+class RTCPeerConnection {
+  Function(RTCTrackEvent event)? onTrack;
+  Function()? onRenegotiationNeeded;
+  Function(RTCIceCandidate)? onIceCandidate;
+  Function(dynamic state)? onIceGatheringState;
+  Function(dynamic state)? onIceConnectionState;
+
+  Future<RTCSessionDescription> createOffer(Map<String, dynamic> constraints) {
+    throw UnimplementedError();
+  }
+
+  Future<RTCSessionDescription> createAnswer(Map<String, dynamic> constraints) {
+    throw UnimplementedError();
+  }
+
+  Future<void> setRemoteDescription(RTCSessionDescription description) async {}
+  Future<void> setLocalDescription(RTCSessionDescription description) async {}
+
+  Future<RTCRtpSender> addTrack(
+      MediaStreamTrack track, MediaStream stream) async {
+    return RTCRtpSender();
+  }
+
+  Future<void> removeTrack(RTCRtpSender sender) async {}
+
+  Future<void> close() async {}
+
+  Future<void> dispose() async {}
+
+  Future<void> addIceCandidate(RTCIceCandidate candidate) async {}
+
+  Future<void> addStream(MediaStream stream) async {}
+
+  Future<void> removeStream(MediaStream stream) async {}
+
+  Future<List<dynamic>> getTransceivers() async {
+    throw UnimplementedError();
+  }
+
+  Future<List<RTCRtpSender>> getSenders() async {
+    throw UnimplementedError();
+  }
+
+  Future<void> addCandidate(RTCIceCandidate candidate) async {}
+
+  dynamic get signalingState => throw UnimplementedError();
+}
+
+class RTCIceCandidate {
+  String get candidate => throw UnimplementedError();
+  String get sdpMid => throw UnimplementedError();
+  int get sdpMLineIndex => throw UnimplementedError();
+  Map<String, dynamic> toMap() => throw UnimplementedError();
+  RTCIceCandidate(String candidate, String sdpMid, int sdpMLineIndex);
+}
+
+class RTCRtpSender {
+  MediaStreamTrack? get track => throw UnimplementedError();
+  DtmfSender get dtmfSender => throw UnimplementedError();
+}
+
+class RTCSessionDescription {
+  late String type;
+  late String sdp;
+  RTCSessionDescription(this.sdp, this.type);
+}
+
+class RTCTrackEvent {
+  late List<MediaStream> streams;
+}
+
+enum TransceiverDirection {
+  SendRecv,
+  SendOnly,
+  RecvOnly,
+  Inactive,
+}
+
+enum RTCSignalingState { RTCSignalingStateStable }
+
+class RTCVideoRenderer {}
+
+const kIsWeb = false;
+
+bool get kIsMobile => !kIsWeb && (Platform.isAndroid || Platform.isIOS);
+
+class Helper {
+  static Future<void> switchCamera(MediaStreamTrack track) async {}
+}
+
+class DtmfSender {
+  Future<void> insertDTMF(String tones) async {}
+}
+
+Future<MediaStream> createPeerConnection(
+    Map<String, dynamic> constraints) async {
+  throw UnimplementedError();
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index 9ac08b2f..4d236c92 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -24,7 +24,6 @@ dependencies:
   html: ^0.15.0
   collection: ^1.15.0
   sdp_transform: ^0.3.2
-  flutter_webrtc: ^0.7.1
 
 dev_dependencies:
   dart_code_metrics: ^4.4.0