diff --git a/CHANGELOG.md b/CHANGELOG.md
index b79604b..f6849ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,12 @@
+## v4.2.2 (Fed 15, 2024)
+
+### Improvements
+- Fixed the bug where `votedPollOptionIds` in `Poll` is always empty
+
 ## v4.2.1 (Fed 5, 2024)
 
 ### Improvements
-- Fixed the bug where `getCachedMetaData()` in `BaseChannel` is not being updated when deleting metadata.
+- Fixed the bug where `getCachedMetaData()` in `BaseChannel` is not being updated when deleting metadata
 
 ## v4.2.0 (Jan 31, 2024)
 
diff --git a/README.md b/README.md
index 7fcb4be..4def82b 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: ^4.2.1
+  sendbird_chat_sdk: ^4.2.2
 ```
 
 - 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 295e4a3..4d81016 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 = '4.2.1';
+const sdkVersion = '4.2.2';
 
 // Internal implementation for main class. Do not directly access this class.
 class Chat with WidgetsBindingObserver {
diff --git a/lib/src/public/main/model/poll/poll.dart b/lib/src/public/main/model/poll/poll.dart
index 820ae48..9b5be34 100644
--- a/lib/src/public/main/model/poll/poll.dart
+++ b/lib/src/public/main/model/poll/poll.dart
@@ -58,7 +58,7 @@ class Poll {
 
   /// Contains optionIds which the current user voted on.
   /// If the current user has not voted, this list will be empty.
-  @JsonKey(defaultValue: [])
+  @JsonKey(name: 'voted_option_ids', defaultValue: [])
   List<int>? votedPollOptionIds;
 
   Poll({
@@ -149,9 +149,12 @@ class Poll {
       if (event.json['poll']['allow_multiple_votes'] != null) {
         allowMultipleVotes = event.json['poll']['allow_multiple_votes'];
       }
-      if (event.json['poll']['voted_poll_option_ids'] != null) {
-        votedPollOptionIds = event.json['poll']['voted_poll_option_ids'];
-      }
+
+      // voted_option_ids is not coming from PEDI, so validate it by SDK itself
+      final optionIds = options.map((option) => option.id).toSet();
+      final validVotedOptionIds =
+          votedPollOptionIds?.toSet().intersection(optionIds).toList();
+      votedPollOptionIds = validVotedOptionIds;
 
       return true;
     } else {
@@ -175,6 +178,13 @@ class Poll {
           options.firstWhere((e) => (e.id == optionId)).voteCount = voteCount;
         }
       }
+
+      if (event.json['voted_option_ids'] != null) {
+        votedPollOptionIds = (event.json['voted_option_ids'] as List<dynamic>?)
+                ?.map((e) => e as int)
+                .toList() ??
+            [];
+      }
     } else {
       return false;
     }
diff --git a/lib/src/public/main/model/poll/poll.g.dart b/lib/src/public/main/model/poll/poll.g.dart
index 2a356d7..cf6ce76 100644
--- a/lib/src/public/main/model/poll/poll.g.dart
+++ b/lib/src/public/main/model/poll/poll.g.dart
@@ -25,7 +25,7 @@ Poll _$PollFromJson(Map<String, dynamic> json) => Poll(
       createdBy: json['created_by'] as String?,
       allowUserSuggestion: json['allow_user_suggestion'] as bool? ?? false,
       allowMultipleVotes: json['allow_multiple_votes'] as bool? ?? false,
-      votedPollOptionIds: (json['voted_poll_option_ids'] as List<dynamic>?)
+      votedPollOptionIds: (json['voted_option_ids'] as List<dynamic>?)
               ?.map((e) => e as int)
               .toList() ??
           [],
@@ -45,7 +45,7 @@ Map<String, dynamic> _$PollToJson(Poll instance) => <String, dynamic>{
       'created_by': instance.createdBy,
       'allow_user_suggestion': instance.allowUserSuggestion,
       'allow_multiple_votes': instance.allowMultipleVotes,
-      'voted_poll_option_ids': instance.votedPollOptionIds,
+      'voted_option_ids': instance.votedPollOptionIds,
     };
 
 const _$PollStatusEnumMap = {
diff --git a/pubspec.yaml b/pubspec.yaml
index 5ef911f..e41258c 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: 4.2.1
+version: 4.2.2
 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