diff --git a/README.md b/README.md
index f09edb5..30cbced 100644
--- a/README.md
+++ b/README.md
@@ -28,13 +28,13 @@ This version requires [PHP](https://php.net) 7.2-7.4.
 To get the latest version, simply require the project using [Composer](https://getcomposer.org). You will need to install any package that "provides" `psr/http-client-implementation`. Pure PHP users will want something like:
 
 ```bash
-$ composer require bitbucket/client guzzlehttp/guzzle:^7.0.1
+$ composer require bitbucket/client:^3.0 guzzlehttp/guzzle:^7.0.1 http-interop/http-factory-guzzle:^1.0
 ```
 
 Laravel users will want something like:
 
 ```bash
-$ composer require graham-campbell/bitbucket guzzlehttp/guzzle:^7.0.1
+$ composer require graham-campbell/bitbucket:^7.0 guzzlehttp/guzzle:^7.0.1 http-interop/http-factory-guzzle:^1.0
 ```
 
 We are decoupled from any HTTP messaging client with help by [HTTPlug](http://httplug.io). You can visit [HTTPlug for library users](https://docs.php-http.org/en/latest/httplug/users.html) to get more information about installing HTTPlug related packages. [`graham-campbell/bitbucket`](https://github.com/GrahamCampbell/Laravel-Bitbucket) is also maintained by [Graham Campbell](https://github.com/GrahamCampbell).
diff --git a/composer.json b/composer.json
index 70eb543..9e2e435 100644
--- a/composer.json
+++ b/composer.json
@@ -11,9 +11,9 @@
     ],
     "require": {
         "php": "^7.2.5",
-        "php-http/client-common": "^2.1",
+        "php-http/client-common": "^2.2",
         "php-http/cache-plugin": "^1.7",
-        "php-http/discovery": "^1.7",
+        "php-http/discovery": "^1.9",
         "php-http/httplug": "^2.1",
         "php-http/multipart-stream-builder": "^1.1",
         "psr/cache": "^1.0",
@@ -24,9 +24,10 @@
     "require-dev": {
         "bamarni/composer-bin-plugin": "^1.4.1",
         "graham-campbell/analyzer": "^3.0",
-        "phpunit/phpunit": "^8.5|^9.0",
-        "php-http/guzzle6-adapter": "^2.0",
-        "php-http/mock-client": "^1.3"
+        "guzzlehttp/guzzle": "^7.0.1",
+        "http-interop/http-factory-guzzle": "^1.0",
+        "php-http/mock-client": "^1.4",
+        "phpunit/phpunit": "^8.5|^9.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Client.php b/src/Client.php
index 60886e0..1e48d75 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -29,7 +29,7 @@
 use Http\Client\Common\Plugin\HeaderDefaultsPlugin;
 use Http\Client\Common\Plugin\HistoryPlugin;
 use Http\Client\Common\Plugin\RedirectPlugin;
-use Http\Discovery\UriFactoryDiscovery;
+use Http\Discovery\Psr17FactoryDiscovery;
 
 /**
  * The Bitbucket API 2.0 client.
@@ -191,7 +191,7 @@ public function authenticate(string $method, string $token, string $password = n
     public function setUrl(string $url)
     {
         $this->httpClientBuilder->removePlugin(AddHostPlugin::class);
-        $this->httpClientBuilder->addPlugin(new AddHostPlugin(UriFactoryDiscovery::find()->createUri($url)));
+        $this->httpClientBuilder->addPlugin(new AddHostPlugin(Psr17FactoryDiscovery::findUrlFactory()->createUri($url)));
     }
 
     /**
diff --git a/src/HttpClient/Builder.php b/src/HttpClient/Builder.php
index 5955573..e9b654f 100644
--- a/src/HttpClient/Builder.php
+++ b/src/HttpClient/Builder.php
@@ -19,13 +19,12 @@
 use Http\Client\Common\Plugin\Cache\Generator\HeaderCacheKeyGenerator;
 use Http\Client\Common\Plugin\CachePlugin;
 use Http\Client\Common\PluginClientFactory;
-use Http\Discovery\MessageFactoryDiscovery;
+use Http\Discovery\Psr17FactoryDiscovery;
 use Http\Discovery\Psr18ClientDiscovery;
-use Http\Discovery\StreamFactoryDiscovery;
-use Http\Message\RequestFactory;
-use Http\Message\StreamFactory;
 use Psr\Cache\CacheItemPoolInterface;
 use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\StreamFactoryInterface;
 
 /**
  * The Bitbucket HTTP client builder class.
@@ -59,14 +58,14 @@ final class Builder
     /**
      * The HTTP request factory.
      *
-     * @var \Http\Message\RequestFactory
+     * @var \Psr\Http\Message\RequestFactoryInterface
      */
     private $requestFactory;
 
     /**
      * The HTTP stream factory.
      *
-     * @var \Http\Message\StreamFactory
+     * @var \Psr\Http\Message\StreamFactoryInterface
      */
     private $streamFactory;
 
@@ -96,18 +95,18 @@ final class Builder
     /**
      * Create a new http client builder instance.
      *
-     * @param \Psr\Http\Client\ClientInterface|null $httpClient
-     * @param \Http\Message\RequestFactory|null     $requestFactory
-     * @param \Http\Message\StreamFactory|null      $streamFactory
+     * @param \Psr\Http\Client\ClientInterface|null          $httpClient
+     * @param \Psr\Http\Message\RequestFactoryInterface|null $requestFactory
+     * @param \Psr\Http\Message\StreamFactoryInterface|null  $streamFactory
      */
     public function __construct(
         ClientInterface $httpClient = null,
-        RequestFactory $requestFactory = null,
-        StreamFactory $streamFactory = null
+        RequestFactoryInterface $requestFactory = null,
+        StreamFactoryInterface $streamFactory = null
     ) {
         $this->httpClient = $httpClient ?? Psr18ClientDiscovery::find();
-        $this->requestFactory = $requestFactory ?? MessageFactoryDiscovery::find();
-        $this->streamFactory = $streamFactory ?? StreamFactoryDiscovery::find();
+        $this->requestFactory = $requestFactory ?? Psr17FactoryDiscovery::findRequestFactory();
+        $this->streamFactory = $streamFactory ?? Psr17FactoryDiscovery::findStreamFactory();
     }
 
     /**
diff --git a/tests/MockedClient.php b/tests/MockedClient.php
index 0c292e5..9db1cd7 100644
--- a/tests/MockedClient.php
+++ b/tests/MockedClient.php
@@ -15,8 +15,8 @@
 
 use Bitbucket\Client;
 use Bitbucket\HttpClient\Builder;
-use Http\Message\ResponseFactory;
 use Http\Mock\Client as MockClient;
+use Psr\Http\Message\ResponseFactoryInterface;
 use Psr\Http\Message\ResponseInterface;
 
 /**
@@ -42,11 +42,11 @@ public static function create(ResponseInterface $response)
     /**
      * @param \Psr\Http\Message\ResponseInterface $response
      *
-     * @return \Http\Message\ResponseFactory
+     * @return \Psr\Http\Message\ResponseFactoryInterface
      */
     private static function createResponseFactory(ResponseInterface $response)
     {
-        return new class($response) implements ResponseFactory {
+        return new class($response) implements ResponseFactoryInterface {
             private $response;
 
             public function __construct(ResponseInterface $response)
@@ -54,13 +54,8 @@ public function __construct(ResponseInterface $response)
                 $this->response = $response;
             }
 
-            public function createResponse(
-                $statusCode = 200,
-                $reasonPhrase = null,
-                array $headers = [],
-                $body = null,
-                $protocolVersion = '1.1'
-            ) {
+            public function createResponse(int $code = 200, string $reasonPhrase = ''): ResponseInterface
+            {
                 return $this->response;
             }
         };
diff --git a/vendor-bin/phpstan/composer.json b/vendor-bin/phpstan/composer.json
index 216707a..1753dad 100644
--- a/vendor-bin/phpstan/composer.json
+++ b/vendor-bin/phpstan/composer.json
@@ -1,7 +1,8 @@
 {
     "require": {
-        "phpstan/phpstan": "^0.12.31",
+        "phpstan/phpstan": "^0.12.32",
         "phpstan/extension-installer": "^1.0.4",
+        "phpstan/phpstan-deprecation-rules": "^0.12.4",
         "phpstan/phpstan-strict-rules": "^0.12.2",
         "thecodingmachine/phpstan-strict-rules": "^0.12.0"
     },