diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7b1f5a..b79604b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## v4.2.1 (Fed 5, 2024)
+
+### Improvements
+- Fixed the bug where `getCachedMetaData()` in `BaseChannel` is not being updated when deleting metadata.
+
 ## v4.2.0 (Jan 31, 2024)
 
 ### Features
@@ -9,7 +14,7 @@
 - Added `useCollectionCaching` in `SendbirdChatOptions` (The default value is `true`)
 - Added `getCachedDataSize()`, `clearCachedData()` and `clearCachedMessages()` in `SendbirdChat`
 - Added `getFailedMessages()`, `removeFailedMessages()` and `removeAllFailedMessages()` in `MessageCollection`
-- Added `markAsRead() in `BaseMessageCollection`
+- Added `markAsRead()` in `BaseMessageCollection`
 
 ### Improvements
 - Fixed the bugs regarding FeedChannel
diff --git a/README.md b/README.md
index 4fac161..7fcb4be 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ Before installing Sendbird Chat SDK, you need to create a Sendbird application o
 
 ```yaml
 dependencies:
-  sendbird_chat_sdk: ^4.2.0
+  sendbird_chat_sdk: ^4.2.1
 ```
 
 - Run `flutter pub get` command in your project directory.
diff --git a/lib/src/internal/main/chat/chat.dart b/lib/src/internal/main/chat/chat.dart
index cad3bbc..295e4a3 100644
--- a/lib/src/internal/main/chat/chat.dart
+++ b/lib/src/internal/main/chat/chat.dart
@@ -60,7 +60,7 @@ part 'chat_notifications.dart';
 part 'chat_push.dart';
 part 'chat_user.dart';
 
-const sdkVersion = '4.2.0';
+const sdkVersion = '4.2.1';
 
 // Internal implementation for main class. Do not directly access this class.
 class Chat with WidgetsBindingObserver {
diff --git a/lib/src/internal/main/chat_manager/command_manager.dart b/lib/src/internal/main/chat_manager/command_manager.dart
index 3e957ba..0c9dded 100644
--- a/lib/src/internal/main/chat_manager/command_manager.dart
+++ b/lib/src/internal/main/chat_manager/command_manager.dart
@@ -1157,7 +1157,7 @@ class CommandManager {
       );
 
       final cachedMetaData = _chat.channelCache
-              .find<MetaDataCache<String>>(channelKey: event.channelUrl) ??
+              .find<MetaDataCache>(channelKey: event.channelUrl) ??
           MetaDataCache(
             channelType: event.channelType,
             channelUrl: event.channelUrl,
diff --git a/pubspec.yaml b/pubspec.yaml
index 4886a29..5ef911f 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: sendbird_chat_sdk
 description: With Sendbird Chat for Flutter, you can easily build an in-app chat with all the essential messaging features.
-version: 4.2.0
+version: 4.2.1
 homepage: https://sendbird.com
 repository: https://github.com/sendbird/sendbird-chat-sdk-flutter
 documentation: https://sendbird.com/docs/chat/sdk/v4/flutter/getting-started/send-first-message