diff --git a/CHANGELOG.md b/CHANGELOG.md
index 878705e..a467686 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## v0.8.0-beta.1 (2023-11-13)
+### Changed
+- Changed underlying `openai/client` package version from 0.7.8 to v0.8.0-beta.1
+
 ## v0.7.8 (2023-11-07)
 ### Changed
 - Changed underlying `openai/client` package version from 0.7.5 to 0.7.8
diff --git a/composer.json b/composer.json
index 2fbd65e..fa170b0 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "php": "^8.1.0",
         "guzzlehttp/guzzle": "^7.7.0",
         "laravel/framework": "^9.46.0|^10.14.1",
-        "openai-php/client": "^0.7.8"
+        "openai-php/client": "v0.8.0-beta.1"
     },
     "require-dev": {
         "laravel/pint": "^1.10.3",
diff --git a/src/Facades/OpenAI.php b/src/Facades/OpenAI.php
index f4d9355..ffd0294 100644
--- a/src/Facades/OpenAI.php
+++ b/src/Facades/OpenAI.php
@@ -10,6 +10,7 @@
 use OpenAI\Responses\StreamResponse;
 
 /**
+ * @method static \OpenAI\Resources\Assistants assistants()
  * @method static \OpenAI\Resources\Audio audio()
  * @method static \OpenAI\Resources\Chat chat()
  * @method static \OpenAI\Resources\Completions completions()
@@ -20,6 +21,7 @@
  * @method static \OpenAI\Resources\Images images()
  * @method static \OpenAI\Resources\Models models()
  * @method static \OpenAI\Resources\Moderations moderations()
+ * @method static \OpenAI\Resources\Threads threads()
  */
 final class OpenAI extends Facade
 {
diff --git a/src/ServiceProvider.php b/src/ServiceProvider.php
index ad04878..e7d3344 100644
--- a/src/ServiceProvider.php
+++ b/src/ServiceProvider.php
@@ -32,6 +32,7 @@ public function register(): void
             return OpenAI::factory()
                 ->withApiKey($apiKey)
                 ->withOrganization($organization)
+                ->withHttpHeader('OpenAI-Beta', 'assistants=v1')
                 ->withHttpClient(new \GuzzleHttp\Client(['timeout' => config('openai.request_timeout', 30)]))
                 ->make();
         });