diff --git a/README.md b/README.md
index dd95e6a..b83345e 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
-# InterFAX notification channel for Laravel 9.x, 10.x
+# InterFAX notification channel for Laravel 10.x, 11.x
 
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/laravel-notification-channels/interfax.svg?style=flat-square)](https://packagist.org/packages/laravel-notification-channels/interfax)
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE.md)
 [![Build Status](https://img.shields.io/travis/laravel-notification-channels/interfax/main.svg?style=flat-square)](https://travis-ci.org/laravel-notification-channels/interfax)
 [![Total Downloads](https://img.shields.io/packagist/dt/laravel-notification-channels/interfax.svg?style=flat-square)](https://packagist.org/packages/laravel-notification-channels/interfax)
 
-This package makes it easy to send notifications using [InterFAX](https://interfax.net) with Laravel 9.x and 10.x.
+This package makes it easy to send notifications using [InterFAX](https://interfax.net) with Laravel 10.x and 11.x.
 
 ## Contents
 
@@ -140,4 +140,4 @@ Please see [CONTRIBUTING](CONTRIBUTING.md) for details.
 
 ## License
 
-The MIT License (MIT). Please see [License File](LICENSE.md) for more information.
+The MIT License (MIT). Please see [License File](LICENSE.md) for more information.
\ No newline at end of file
diff --git a/phpstan.neon b/phpstan.neon
index 4747eab..97f7eaa 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -3,4 +3,12 @@ parameters:
     paths:
         - src/
 
-    level: 5
+    level: 8
+
+    ignoreErrors:
+        -
+            identifier: ternary.alwaysTrue
+            path: src/InterfaxChannel.php
+
+    stubFiles:
+        - stubs/Resource.stub
diff --git a/src/Contracts/InterfaxNotificationContract.php b/src/Contracts/InterfaxNotificationContract.php
index dc232e3..72e577e 100644
--- a/src/Contracts/InterfaxNotificationContract.php
+++ b/src/Contracts/InterfaxNotificationContract.php
@@ -6,5 +6,9 @@
 
 interface InterfaxNotificationContract
 {
+    /**
+     * @param  mixed $notifiable
+     * @return InterfaxMessage
+     */
     public function toInterfax($notifiable): InterfaxMessage;
 }
diff --git a/src/Exceptions/CouldNotSendNotification.php b/src/Exceptions/CouldNotSendNotification.php
index aa15bc6..3931a3e 100644
--- a/src/Exceptions/CouldNotSendNotification.php
+++ b/src/Exceptions/CouldNotSendNotification.php
@@ -7,9 +7,18 @@
 
 class CouldNotSendNotification extends Exception
 {
-    protected $interfaxMessage;
-    protected $responseAttributes;
+    protected InterfaxMessage $interfaxMessage;
 
+    /** @var array<string, mixed> */
+    protected array $responseAttributes;
+
+    /**
+     * @param string          $message
+     * @param int             $code
+     * @param Exception|null  $previous
+     * @param InterfaxMessage $interfaxMessage
+     * @param array<string, mixed>    $responseAttributes
+     */
     final public function __construct(string $message, int $code, Exception $previous = null, InterfaxMessage $interfaxMessage, array $responseAttributes)
     {
         parent::__construct($message, $code, $previous);
@@ -18,22 +27,37 @@ final public function __construct(string $message, int $code, Exception $previou
         $this->responseAttributes = $responseAttributes;
     }
 
-    public static function serviceRespondedWithAnError($message, $responseAttributes, string $exceptionMessage = 'The fax failed to send via InterFAX.')
+    /**
+     * @param  InterfaxMessage $message
+     * @param  array<string, mixed> $responseAttributes
+     * @param  string          $exceptionMessage
+     * @return CouldNotSendNotification
+     */
+    public static function serviceRespondedWithAnError(InterfaxMessage $message, array $responseAttributes, string $exceptionMessage = 'The fax failed to send via InterFAX.')
     {
         return new static($exceptionMessage, $responseAttributes['status'], null, $message, $responseAttributes);
     }
 
+    /**
+     * @return mixed
+     */
     public function getUser()
     {
         return $this->interfaxMessage->user;
     }
 
-    public function getMetadata()
+    /**
+     * @return array<string, mixed>
+     */
+    public function getMetadata(): array
     {
         return $this->interfaxMessage->metadata;
     }
 
-    public function getAttributes()
+    /**
+     * @return array<string, mixed>
+     */
+    public function getAttributes(): array
     {
         return $this->responseAttributes;
     }
diff --git a/src/InterfaxChannel.php b/src/InterfaxChannel.php
index 0e971a9..439fce0 100644
--- a/src/InterfaxChannel.php
+++ b/src/InterfaxChannel.php
@@ -8,13 +8,10 @@
 
 class InterfaxChannel
 {
-    protected $client;
+    /** @var \Interfax\Outbound\Fax $fax */
     protected $fax;
 
-    public function __construct(Client $client)
-    {
-        $this->client = $client;
-    }
+    public function __construct(protected Client $client) {}
 
     /**
      * Send the given notification.
@@ -24,7 +21,7 @@ public function __construct(Client $client)
      *
      * @throws \NotificationChannels\Interfax\Exceptions\CouldNotSendNotification
      */
-    public function send($notifiable, InterfaxNotificationContract $notification)
+    public function send($notifiable, InterfaxNotificationContract $notification): void
     {
         if (! $faxNumber = $notifiable->routeNotificationFor('interfax')) {
             return;
@@ -41,11 +38,11 @@ public function send($notifiable, InterfaxNotificationContract $notification)
             if ($message->shouldCheckStatus()) {
                 $message->sleep();
 
-                while ($this->fax->refresh()->status < 0) {
+                while ($this->getStatus() < 0) {
                     $message->sleep();
                 }
 
-                if ($this->fax->refresh()->status > 0) {
+                if ($this->getStatus() > 0) {
                     throw CouldNotSendNotification::serviceRespondedWithAnError($message, $this->fax->attributes());
                 }
             }
@@ -56,4 +53,10 @@ public function send($notifiable, InterfaxNotificationContract $notification)
             throw CouldNotSendNotification::serviceRespondedWithAnError($message, $attributes, $exceptionMessage);
         }
     }
+
+    protected function getStatus(): int
+    {
+        $fax = $this->fax->refresh();
+        return $fax->status;
+    }
 }
diff --git a/src/InterfaxFile.php b/src/InterfaxFile.php
index c8e045f..75e1112 100644
--- a/src/InterfaxFile.php
+++ b/src/InterfaxFile.php
@@ -7,8 +7,8 @@ class InterfaxFile extends \Interfax\File
     /**
      * File constructor.
      *
-     * @param $location
-     * @param  array  $params
+     * @param  resource|string $location
+     * @param  array<string, mixed>  $params
      *
      * @throws \InvalidArgumentException
      */
diff --git a/src/InterfaxMessage.php b/src/InterfaxMessage.php
index a2edfc3..52f9b8d 100644
--- a/src/InterfaxMessage.php
+++ b/src/InterfaxMessage.php
@@ -6,12 +6,17 @@
 
 class InterfaxMessage
 {
+    /** @var array<int, InterfaxFile|string|array<string, mixed>> */
     protected array $files;
+
+    /** @var resource|false $stream */
     protected $stream;
     protected string $filename;
     protected string $method;
-    protected $statusCheck = false;
-    public $user;
+    protected bool $statusCheck = false;
+    public mixed $user;
+
+    /** @var array<string, mixed> */
     public array $metadata = [];
 
     const FILES = 'files';
@@ -20,9 +25,9 @@ class InterfaxMessage
     const POLLING_INTERVAL_DEFAULT = 15;
     const POLLING_INTERVAL_MINIMUM = 10;
 
-    protected static $DEFAULT_CHUNK_SIZE = 1048576;
+    protected static int $DEFAULT_CHUNK_SIZE = 1048576;
 
-    public function file(string $file)
+    public function file(string $file): InterfaxMessage
     {
         $this->files = Arr::wrap($file);
         $this->method = static::FILES;
@@ -30,6 +35,10 @@ public function file(string $file)
         return $this;
     }
 
+    /**
+     * @param  array<int, array<string, mixed>>  $files
+     * @return InterfaxMessage
+     */
     public function files(array $files): InterfaxMessage
     {
         $this->files = $files;
@@ -38,6 +47,11 @@ public function files(array $files): InterfaxMessage
         return $this;
     }
 
+    /**
+     * @param  resource|false $stream
+     * @param  string $filename
+     * @return InterfaxMessage
+     */
     public function stream($stream, string $filename): InterfaxMessage
     {
         $this->stream = $stream;
@@ -47,10 +61,9 @@ public function stream($stream, string $filename): InterfaxMessage
         return $this;
     }
 
-    public function checkStatus(bool $shouldCheck = true)
+    public function checkStatus(bool $shouldCheck = true): InterfaxMessage
     {
         $this->statusCheck = $shouldCheck;
-
         return $this;
     }
 
@@ -68,14 +81,13 @@ public function shouldCheckStatus(): bool
     public function user($notifiable): InterfaxMessage
     {
         $this->user = $notifiable;
-
         return $this;
     }
 
     /**
      * Add metadata to the message for logging purposes.
      *
-     * @param  array  $data  The data to add to the metadata array
+     * @param  array<string, mixed>  $data  The data to add to the metadata array
      * @return InterfaxMessage
      */
     public function addMetadata(array $data): InterfaxMessage
@@ -87,6 +99,9 @@ public function addMetadata(array $data): InterfaxMessage
         return $this;
     }
 
+    /**
+     * @return array<int, InterfaxFile|array<string, mixed>>|array<int, array<int, mixed>>
+     */
     public function makeFiles(): array
     {
         if ($this->method === static::STREAM) {
@@ -102,7 +117,7 @@ public function makeFiles(): array
             ];
         }
 
-        return array_map('static::setChunkSize', $this->files);
+        return array_map(fn ($file) => static::setChunkSize($file), $this->files);
     }
 
     public function sleep(): void
@@ -111,7 +126,11 @@ public function sleep(): void
         sleep(max($interval, static::POLLING_INTERVAL_MINIMUM));
     }
 
-    protected static function setChunkSize($file)
+    /**
+     * @param InterfaxFile|string|array<string, mixed> $file
+     * @return InterfaxFile|array<string, mixed>
+     */
+    protected static function setChunkSize(InterfaxFile|string|array $file): InterfaxFile|array
     {
         $chunk_size = config('services.interfax.chunk_size', static::$DEFAULT_CHUNK_SIZE);
 
diff --git a/src/InterfaxServiceProvider.php b/src/InterfaxServiceProvider.php
index f8dcb05..5fadd23 100644
--- a/src/InterfaxServiceProvider.php
+++ b/src/InterfaxServiceProvider.php
@@ -7,7 +7,7 @@
 
 class InterfaxServiceProvider extends ServiceProvider
 {
-    public function boot()
+    public function boot(): void
     {
         $this->app->when(InterfaxChannel::class)
             ->needs(Client::class)
diff --git a/stubs/Resource.stub b/stubs/Resource.stub
new file mode 100644
index 0000000..7023f8e
--- /dev/null
+++ b/stubs/Resource.stub
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Interfax
+ *
+ * (C) InterFAX, 2016
+ *
+ * @package interfax/interfax
+ * @author Interfax <dev@interfax.net>
+ * @author Mike Smith <mike.smith@camc-ltd.co.uk>
+ * @copyright Copyright (c) 2016, InterFAX
+ * @license MIT
+ */
+
+namespace Interfax;
+
+/**
+ * @property-read int $status
+ */
+abstract class Resource
+{
+
+}