diff --git a/melos.yaml b/melos.yaml
index f3d3eb706..2ce0904c5 100644
--- a/melos.yaml
+++ b/melos.yaml
@@ -6,10 +6,6 @@ packages:
 
 command:
   bootstrap:
-    # It seems so that running "pub get" in parallel has some issues (like
-    # https://github.com/dart-lang/pub/issues/3404). Disabling this feature
-    # makes the CI much more stable.
-    runPubGetInParallel: false
     # Dart and Flutter environment used in the project.
     environment:
       sdk: ^3.5.4
@@ -62,11 +58,11 @@ command:
       share_plus: ^10.0.2
       shimmer: ^3.0.0
       sqlite3_flutter_libs: ^0.5.26
-      stream_chat: ^8.3.0
-      stream_chat_flutter: ^8.3.0
-      stream_chat_flutter_core: ^8.3.0
-      stream_chat_localizations: ^8.3.0
-      stream_chat_persistence: ^8.3.0
+      stream_chat: ^9.0.0
+      stream_chat_flutter: ^9.0.0
+      stream_chat_flutter_core: ^9.0.0
+      stream_chat_localizations: ^9.0.0
+      stream_chat_persistence: ^9.0.0
       synchronized: ^3.1.0+1
       thumblr: ^0.0.4
       url_launcher: ^6.3.0
diff --git a/packages/stream_chat/CHANGELOG.md b/packages/stream_chat/CHANGELOG.md
index 114c508b7..ea2f02154 100644
--- a/packages/stream_chat/CHANGELOG.md
+++ b/packages/stream_chat/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Upcoming
+## 9.0.0
 
 ✅ Added
 
diff --git a/packages/stream_chat/example/pubspec.yaml b/packages/stream_chat/example/pubspec.yaml
index c73a43730..c18beb639 100644
--- a/packages/stream_chat/example/pubspec.yaml
+++ b/packages/stream_chat/example/pubspec.yaml
@@ -24,7 +24,7 @@ dependencies:
   cupertino_icons: ^1.0.3
   flutter:
     sdk: flutter
-  stream_chat: ^8.3.0
+  stream_chat: ^9.0.0
 
 flutter:
   uses-material-design: true
diff --git a/packages/stream_chat/lib/version.dart b/packages/stream_chat/lib/version.dart
index 6cb938d9e..54fedc79c 100644
--- a/packages/stream_chat/lib/version.dart
+++ b/packages/stream_chat/lib/version.dart
@@ -3,4 +3,4 @@ import 'package:stream_chat/src/client/client.dart';
 /// Current package version
 /// Used in [StreamChatClient] to build the `x-stream-client` header
 // ignore: constant_identifier_names
-const PACKAGE_VERSION = '8.3.0';
+const PACKAGE_VERSION = '9.0.0';
diff --git a/packages/stream_chat/pubspec.yaml b/packages/stream_chat/pubspec.yaml
index 3bbfd3d62..951f87eb0 100644
--- a/packages/stream_chat/pubspec.yaml
+++ b/packages/stream_chat/pubspec.yaml
@@ -1,7 +1,7 @@
 name: stream_chat
 homepage: https://getstream.io/
 description: The official Dart client for Stream Chat, a service for building chat applications.
-version: 8.3.0
+version: 9.0.0
 repository: https://github.com/GetStream/stream-chat-flutter
 issue_tracker: https://github.com/GetStream/stream-chat-flutter/issues
 
diff --git a/packages/stream_chat_flutter/CHANGELOG.md b/packages/stream_chat_flutter/CHANGELOG.md
index c7267b677..06c36dd85 100644
--- a/packages/stream_chat_flutter/CHANGELOG.md
+++ b/packages/stream_chat_flutter/CHANGELOG.md
@@ -1,4 +1,11 @@
-## Upcoming
+## 9.0.0
+
+🛑️ Breaking
+
+- The `StreamAttachmentPickerController` has been restructured to improve flexibility and support additional use cases like poll management.
+  - Previously managed a `List<Attachment>` but now manages an `AttachmentPickerValue` object, which includes:
+    - `attachments`: A list of attachments.
+    - `poll`: A new field for managing polls.
 
 ✅ Added
 
diff --git a/packages/stream_chat_flutter/example/pubspec.yaml b/packages/stream_chat_flutter/example/pubspec.yaml
index d9ab81d53..6b23cbaf3 100644
--- a/packages/stream_chat_flutter/example/pubspec.yaml
+++ b/packages/stream_chat_flutter/example/pubspec.yaml
@@ -25,9 +25,9 @@ dependencies:
   flutter:
     sdk: flutter
   responsive_builder: ^0.7.0
-  stream_chat_flutter: ^8.3.0
-  stream_chat_localizations: ^8.3.0
-  stream_chat_persistence: ^8.3.0
+  stream_chat_flutter: ^9.0.0
+  stream_chat_localizations: ^9.0.0
+  stream_chat_persistence: ^9.0.0
 
 flutter:
   uses-material-design: true
diff --git a/packages/stream_chat_flutter/pubspec.yaml b/packages/stream_chat_flutter/pubspec.yaml
index 3e9b0c6fc..c74abed25 100644
--- a/packages/stream_chat_flutter/pubspec.yaml
+++ b/packages/stream_chat_flutter/pubspec.yaml
@@ -1,7 +1,7 @@
 name: stream_chat_flutter
 homepage: https://github.com/GetStream/stream-chat-flutter
 description: Stream Chat official Flutter SDK. Build your own chat experience using Dart and Flutter.
-version: 8.3.0
+version: 9.0.0
 repository: https://github.com/GetStream/stream-chat-flutter
 issue_tracker: https://github.com/GetStream/stream-chat-flutter/issues
 
@@ -54,7 +54,7 @@ dependencies:
   rxdart: ^0.28.0
   share_plus: ^10.0.2
   shimmer: ^3.0.0
-  stream_chat_flutter_core: ^8.3.0
+  stream_chat_flutter_core: ^9.0.0
   synchronized: ^3.1.0+1
   thumblr: ^0.0.4
   url_launcher: ^6.3.0
diff --git a/packages/stream_chat_flutter_core/CHANGELOG.md b/packages/stream_chat_flutter_core/CHANGELOG.md
index 8aacc0ee5..6c31bbb5c 100644
--- a/packages/stream_chat_flutter_core/CHANGELOG.md
+++ b/packages/stream_chat_flutter_core/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Upcoming
+## 9.0.0
 
 ✅ Added
 
diff --git a/packages/stream_chat_flutter_core/example/pubspec.yaml b/packages/stream_chat_flutter_core/example/pubspec.yaml
index 683f71023..339f9e661 100644
--- a/packages/stream_chat_flutter_core/example/pubspec.yaml
+++ b/packages/stream_chat_flutter_core/example/pubspec.yaml
@@ -23,7 +23,7 @@ dependencies:
   cupertino_icons: ^1.0.3
   flutter:
     sdk: flutter
-  stream_chat_flutter_core: ^8.3.0
+  stream_chat_flutter_core: ^9.0.0
 
 flutter:
   uses-material-design: true
diff --git a/packages/stream_chat_flutter_core/pubspec.yaml b/packages/stream_chat_flutter_core/pubspec.yaml
index 395ff5c13..014c730dd 100644
--- a/packages/stream_chat_flutter_core/pubspec.yaml
+++ b/packages/stream_chat_flutter_core/pubspec.yaml
@@ -1,7 +1,7 @@
 name: stream_chat_flutter_core
 homepage: https://github.com/GetStream/stream-chat-flutter
 description: Stream Chat official Flutter SDK Core. Build your own chat experience using Dart and Flutter.
-version: 8.3.0
+version: 9.0.0
 repository: https://github.com/GetStream/stream-chat-flutter
 issue_tracker: https://github.com/GetStream/stream-chat-flutter/issues
 
@@ -29,7 +29,7 @@ dependencies:
   freezed_annotation: ^2.4.1
   meta: ^1.9.1
   rxdart: ^0.28.0
-  stream_chat: ^8.3.0
+  stream_chat: ^9.0.0
 
 dev_dependencies:
   build_runner: ^2.4.9
diff --git a/packages/stream_chat_localizations/CHANGELOG.md b/packages/stream_chat_localizations/CHANGELOG.md
index 589532766..3e1be4892 100644
--- a/packages/stream_chat_localizations/CHANGELOG.md
+++ b/packages/stream_chat_localizations/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Upcoming
+## 9.0.0
 
 - Added multiple new localization strings related to poll creation and validation.
 - Added multiple new localization strings related to poll message interactions.
diff --git a/packages/stream_chat_localizations/example/pubspec.yaml b/packages/stream_chat_localizations/example/pubspec.yaml
index b925e4182..2dcdbf050 100644
--- a/packages/stream_chat_localizations/example/pubspec.yaml
+++ b/packages/stream_chat_localizations/example/pubspec.yaml
@@ -24,8 +24,8 @@ dependencies:
   cupertino_icons: ^1.0.3
   flutter:
     sdk: flutter
-  stream_chat_flutter: ^8.3.0
-  stream_chat_localizations: ^8.3.0
+  stream_chat_flutter: ^9.0.0
+  stream_chat_localizations: ^9.0.0
 
 flutter:
   uses-material-design: true
\ No newline at end of file
diff --git a/packages/stream_chat_localizations/pubspec.yaml b/packages/stream_chat_localizations/pubspec.yaml
index 6402f67cf..356da1577 100644
--- a/packages/stream_chat_localizations/pubspec.yaml
+++ b/packages/stream_chat_localizations/pubspec.yaml
@@ -1,6 +1,6 @@
 name: stream_chat_localizations
 description: The Official localizations for Stream Chat Flutter, a service for building chat applications
-version: 8.3.0
+version: 9.0.0
 homepage: https://github.com/GetStream/stream-chat-flutter
 repository: https://github.com/GetStream/stream-chat-flutter
 issue_tracker: https://github.com/GetStream/stream-chat-flutter/issues
@@ -26,7 +26,7 @@ dependencies:
     sdk: flutter
   flutter_localizations:
     sdk: flutter
-  stream_chat_flutter: ^8.3.0
+  stream_chat_flutter: ^9.0.0
 
 dev_dependencies:
   flutter_test:
diff --git a/packages/stream_chat_persistence/CHANGELOG.md b/packages/stream_chat_persistence/CHANGELOG.md
index 0d536528f..0f61b2bb4 100644
--- a/packages/stream_chat_persistence/CHANGELOG.md
+++ b/packages/stream_chat_persistence/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Upcoming
+## 9.0.0
 
 - Added support for `Poll` and `PollVote` entities in the database.
 - Updated minimum Flutter version to 3.24.5 for the SDK.
diff --git a/packages/stream_chat_persistence/example/pubspec.yaml b/packages/stream_chat_persistence/example/pubspec.yaml
index 76623ae16..97e2db298 100644
--- a/packages/stream_chat_persistence/example/pubspec.yaml
+++ b/packages/stream_chat_persistence/example/pubspec.yaml
@@ -23,8 +23,8 @@ dependencies:
   cupertino_icons: ^1.0.3
   flutter:
     sdk: flutter
-  stream_chat: ^8.3.0
-  stream_chat_persistence: ^8.3.0
+  stream_chat: ^9.0.0
+  stream_chat_persistence: ^9.0.0
 
 flutter:
   uses-material-design: true
\ No newline at end of file
diff --git a/packages/stream_chat_persistence/pubspec.yaml b/packages/stream_chat_persistence/pubspec.yaml
index 8f2b7a6e8..36e9ea313 100644
--- a/packages/stream_chat_persistence/pubspec.yaml
+++ b/packages/stream_chat_persistence/pubspec.yaml
@@ -1,7 +1,7 @@
 name: stream_chat_persistence
 homepage: https://github.com/GetStream/stream-chat-flutter
 description: Official Stream Chat Persistence library. Build your own chat experience using Dart and Flutter.
-version: 8.3.0
+version: 9.0.0
 repository: https://github.com/GetStream/stream-chat-flutter
 issue_tracker: https://github.com/GetStream/stream-chat-flutter/issues
 
@@ -30,7 +30,7 @@ dependencies:
   path: ^1.8.3
   path_provider: ^2.1.3
   sqlite3_flutter_libs: ^0.5.26
-  stream_chat: ^8.3.0
+  stream_chat: ^9.0.0
 
 dev_dependencies:
   build_runner: ^2.4.9