Update composer.json

composer.json

@@ -34,7 +34,7 @@
         }
     },
     "require": {
-        "guzzlehttp/guzzle": "^7.0.1",
+        "guzzlehttp/guzzle": "^7.0.1 | ^8.0.0",
         "php": "^7.3 | ^8.0"
     },
     "prefer-stable": true

src/PushTemplate.php

@@ -85,7 +85,7 @@ class PushTemplate implements \JsonSerializable
      * @param string|null $name
      * @return $this
      */
-    public function sender(string $email, string $name = null): PushTemplate
+    public function sender(string $email, ?string $name = null): PushTemplate
     {
         $this->sender['email'] = $email;
 
@@ -100,7 +100,7 @@ class PushTemplate implements \JsonSerializable
      * @param string|null $name
      * @return $this
      */
-    public function replyTo(string $email, string $name = null): PushTemplate
+    public function replyTo(string $email, ?string $name = null): PushTemplate
     {
         $this->replyTo['email'] = $email;
 
@@ -156,7 +156,7 @@ class PushTemplate implements \JsonSerializable
      * @param string|null $unsubscribe_url
      * @return $this
      */
-    public function addRecipient(string $email, string $name = null, array $parameters = [], string $unsubscribe_url = null, string $locale = null): PushTemplate
+    public function addRecipient(string $email, ?string $name = null, array $parameters = [], ?string $unsubscribe_url = null, ?string $locale = null): PushTemplate
     {
         $data = [
             'email' => $email
@@ -212,7 +212,7 @@ class PushTemplate implements \JsonSerializable
      * @param $filename
      * @return $this
      */
-    public function addAttachment($file, $filename = null)
+    public function addAttachment($file, ?string $filename = null)
     {
         $file = is_object($file) && method_exists($file, 'getRealPath') ? $file->getRealPath() : $file;
 
@@ -262,14 +262,14 @@ class PushTemplate implements \JsonSerializable
      * @param string|null $locale
      * @return $this
      */
-    public function locale(string $locale = null)
+    public function locale(?string $locale = null)
     {
         $this->locale = $locale;
 
         return $this;
     }
 
-    public function unsubscribeUrl($url = null)
+    public function unsubscribeUrl(?string $url = null)
     {
         $this->unsubscribe_url = $url;