diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91412e4..d055ae5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 2.2.1 (2024-09-12)
+
+
+### Features
+
+* Upgrade RTM Native SDK 2.2.1 ([df1a024](https://github.com/AgoraIO-Extensions/Agora-Flutter-RTM-SDK/commit/df1a024ec28da04c90cecc7729d1b8aafe7eb142))
+
 ## [1.5.9](https://github.com/AgoraIO/Agora-Flutter-RTM-SDK/compare/v1.5.8...v1.5.9) (2023-11-23)
 
 
@@ -166,4 +173,4 @@
 
 ## 0.9.2
 
-* Flutter for Agora RTM SDK first release
\ No newline at end of file
+* Flutter for Agora RTM SDK first release
diff --git a/pubspec.yaml b/pubspec.yaml
index 0f696a6..08b2c35 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,13 +1,11 @@
 name: agora_rtm
-description: "Flutter wrapper around the Agora Real Time Message SDKs for Android and iOS."
+description: Flutter wrapper around the Agora Real Time Message SDKs for Android and iOS.
 version: 2.2.1
 homepage: https://www.agora.io
 repository: https://github.com/AgoraIO-Extensions/Agora-Flutter-RTM-SDK.git
-
 environment:
   sdk: '>=3.0.0 <4.0.0'
   flutter: '>=3.10.0'
-
 dependencies:
   flutter:
     sdk: flutter
@@ -16,7 +14,6 @@ dependencies:
   async: '>=2.8.2'
   meta: '>=1.7.0'
   iris_method_channel: 2.2.0
-
 dev_dependencies:
   flutter_test:
     sdk: flutter
@@ -24,22 +21,7 @@ dev_dependencies:
   build_runner: ^2.1.7
   json_serializable: ^6.1.1
   ffigen: ^4.1.2
-
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter packages.
 flutter:
-  # This section identifies this Flutter project as a plugin project.
-  # The 'pluginClass' specifies the class (in Java, Kotlin, Swift, Objective-C, etc.)
-  # which should be registered in the plugin registry. This is required for
-  # using method channels.
-  # The Android 'package' specifies package in which the registered class is.
-  # This is required for using method channels on Android.
-  # The 'ffiPlugin' specifies that native code should be built and bundled.
-  # This is required for using `dart:ffi`.
-  # All these are used by the tooling to maintain consistency when
-  # adding or updating assets for this project.
   plugin:
     platforms:
       android:
@@ -47,34 +29,3 @@ flutter:
         pluginClass: AgoraRtmPlugin
       ios:
         pluginClass: AgoraRtmPlugin
-
-  # To add assets to your plugin package, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
-  #
-  # For details regarding assets in packages, see
-  # https://flutter.dev/assets-and-images/#from-packages
-  #
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware
-
-  # To add custom fonts to your plugin package, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts in packages, see
-  # https://flutter.dev/custom-fonts/#from-packages