diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3406485a..6090b663 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [3.1.5] - Sep 30, 2021
+* Fixed link in README
+* Improved stabilities
+
 ## [3.1.4] - Sep 24, 2021
 * Fixed HMS push token registration
 * Improved stability 
diff --git a/lib/request/user/list/user_list_query.dart b/lib/request/user/list/user_list_query.dart
index eee26f22..0d2c9a1e 100644
--- a/lib/request/user/list/user_list_query.dart
+++ b/lib/request/user/list/user_list_query.dart
@@ -1,4 +1,3 @@
-
 import 'package:sendbird_sdk/core/models/responses.dart';
 import 'package:sendbird_sdk/request/abstract/api_request.dart';
 import 'package:sendbird_sdk/services/network/http_client.dart';
diff --git a/lib/sdk/internal/sendbird_sdk_internal.dart b/lib/sdk/internal/sendbird_sdk_internal.dart
index 00275f13..f076b9fe 100644
--- a/lib/sdk/internal/sendbird_sdk_internal.dart
+++ b/lib/sdk/internal/sendbird_sdk_internal.dart
@@ -24,7 +24,7 @@ import 'package:sendbird_sdk/utils/async/async_queue.dart';
 import 'package:sendbird_sdk/utils/logger.dart';
 import 'package:sendbird_sdk/utils/parsers.dart';
 
-const sdk_version = '3.1.4';
+const sdk_version = '3.1.5';
 const platform = 'flutter';
 
 /// Internal implementation for main class. Do not directly access this class.
diff --git a/pubspec.yaml b/pubspec.yaml
index fd5ae752..1e583983 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,9 +1,9 @@
 name: sendbird_sdk
 description: The Flutter SDK for Sendbird Chat brings modern messenger chat features to your iOS and Android deployments 
-version: 3.1.4
+version: 3.1.5
 homepage: https://www.sendbird.com
 repository: https://www.github.com/sendbird/sendbird-sdk-flutter
-documentation: https://sendbird.com/docs/chat/v3/flutter/getting-started/about-chat-sdk
+documentation: https://sendbird.com/docs/chat/v3/flutter/quickstart/send-first-message
 
 environment:
   sdk: ">=2.12.0 <3.0.0"