diff --git a/CHANGELOG.md b/CHANGELOG.md
index caf5c73..e02c3c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 --------------------------------------------
 
+[1.5.3] - 2025-03-24
+
+* add getBufferedAmount for DC.
+
+[1.5.2+hotfix.1] - 2025-02-23.
+
+* remove platform_detect.
+
 [1.5.2] - 2025-02-23.
 
 * fix stats for web.
diff --git a/lib/src/rtc_data_channel_impl.dart b/lib/src/rtc_data_channel_impl.dart
index eb6010b..f41be4e 100644
--- a/lib/src/rtc_data_channel_impl.dart
+++ b/lib/src/rtc_data_channel_impl.dart
@@ -48,6 +48,11 @@ class RTCDataChannelWeb extends RTCDataChannel {
   @override
   int? get bufferedAmount => _jsDc.bufferedAmount;
 
+  @override
+  Future<int> getBufferedAmount() async {
+    return _jsDc.bufferedAmount;
+  }
+
   @override
   set bufferedAmountLowThreshold(int? bufferedAmountLowThreshold) {
     _jsDc.bufferedAmountLowThreshold = bufferedAmountLowThreshold ?? 0;
diff --git a/lib/src/rtc_peerconnection_impl.dart b/lib/src/rtc_peerconnection_impl.dart
index 8d171a0..f0c8b99 100644
--- a/lib/src/rtc_peerconnection_impl.dart
+++ b/lib/src/rtc_peerconnection_impl.dart
@@ -4,7 +4,6 @@ import 'dart:js_interop';
 import 'dart:js_interop_unsafe';
 
 import 'package:dart_webrtc/dart_webrtc.dart';
-import 'package:platform_detect/platform_detect.dart';
 import 'package:web/web.dart' as web;
 
 import 'media_stream_track_impl.dart';
@@ -44,7 +43,7 @@ class RTCPeerConnectionWeb extends RTCPeerConnection {
           iceConnectionStateForString(_jsPc.iceConnectionState);
       onIceConnectionState?.call(_iceConnectionState!);
 
-      if (browser.isFirefox) {
+      if (web.Device.isFirefox) {
         switch (_iceConnectionState!) {
           case RTCIceConnectionState.RTCIceConnectionStateNew:
             _connectionState = RTCPeerConnectionState.RTCPeerConnectionStateNew;
@@ -93,7 +92,7 @@ class RTCPeerConnectionWeb extends RTCPeerConnection {
 
     _jsPc.addEventListener('signalingstatechange', onSignalingStateChange.toJS);
 
-    if (!browser.isFirefox) {
+    if (!web.Device.isFirefox) {
       final void Function(JSAny) onConnectionStateChange = (_) {
         _connectionState = peerConnectionStateForString(_jsPc.connectionState);
         onConnectionState?.call(_connectionState!);
@@ -159,7 +158,7 @@ class RTCPeerConnectionWeb extends RTCPeerConnection {
   @override
   Future<RTCIceConnectionState?> getIceConnectionState() async {
     _iceConnectionState = iceConnectionStateForString(_jsPc.iceConnectionState);
-    if (browser.isFirefox) {
+    if (web.Device.isFirefox) {
       switch (_iceConnectionState!) {
         case RTCIceConnectionState.RTCIceConnectionStateNew:
           _connectionState = RTCPeerConnectionState.RTCPeerConnectionStateNew;
@@ -196,7 +195,8 @@ class RTCPeerConnectionWeb extends RTCPeerConnection {
 
   @override
   Future<RTCPeerConnectionState?> getConnectionState() async {
-    if (browser.isFirefox) {
+    /// platform is Firefox
+    if (web.Device.isFirefox) {
       await getIceConnectionState();
     } else {
       _connectionState = peerConnectionStateForString(_jsPc.connectionState);
@@ -314,7 +314,7 @@ class RTCPeerConnectionWeb extends RTCPeerConnection {
 
   @override
   Future<List<StatsReport>> getStats([MediaStreamTrack? track]) async {
-    var stats;
+    web.RTCStatsReport stats;
     if (track != null) {
       var jsTrack = (track as MediaStreamTrackWeb).jsTrack;
       stats = await _jsPc.getStats(jsTrack).toDart;
@@ -335,7 +335,7 @@ class RTCPeerConnectionWeb extends RTCPeerConnection {
             value.getProperty<JSString>('type'.toJS).toDart,
             value.getProperty<JSNumber>('timestamp'.toJS).toDartDouble,
             stats));
-      }.jsify()
+      }.toJS,
     ]);
     return report;
   }
diff --git a/lib/src/rtc_rtp_receiver_impl.dart b/lib/src/rtc_rtp_receiver_impl.dart
index b017b6e..fd56929 100644
--- a/lib/src/rtc_rtp_receiver_impl.dart
+++ b/lib/src/rtc_rtp_receiver_impl.dart
@@ -30,7 +30,7 @@ class RTCRtpReceiverWeb extends RTCRtpReceiver {
             value.getProperty<JSString>('type'.toJS).toDart,
             value.getProperty<JSNumber>('timestamp'.toJS).toDartDouble,
             stats));
-      }.jsify()
+      }.toJS,
     ]);
     return report;
   }
diff --git a/lib/src/rtc_rtp_sender_impl.dart b/lib/src/rtc_rtp_sender_impl.dart
index 38b40c2..c62aaaf 100644
--- a/lib/src/rtc_rtp_sender_impl.dart
+++ b/lib/src/rtc_rtp_sender_impl.dart
@@ -98,7 +98,7 @@ class RTCRtpSenderWeb extends RTCRtpSender {
             value.getProperty<JSString>('type'.toJS).toDart,
             value.getProperty<JSNumber>('timestamp'.toJS).toDartDouble,
             stats));
-      }.jsify()
+      }.toJS,
     ]);
     return report;
   }
diff --git a/pubspec.yaml b/pubspec.yaml
index 94364ce..910244b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dart_webrtc
 description: Use the dart/js library to re-wrap the webrtc js interface of the browser, to adapted common browsers.
-version: 1.5.2
+version: 1.5.3
 homepage: https://github.com/flutter-webrtc/dart-webrtc
 
 environment:
@@ -11,10 +11,9 @@ dependencies:
   js: ">0.6.0 <0.8.0"
   logging: ^1.1.0
   meta: ^1.8.0
-  platform_detect: ^2.1.5
   synchronized: ^3.0.0+3
   web: ^1.0.0
-  webrtc_interface: ^1.2.1
+  webrtc_interface: ^1.2.2+hotfix.1
 
 dev_dependencies:
   build_runner: ^2.3.3