diff --git a/src/MsTeamsChannel.php b/src/MsTeamsChannel.php
index edf775d..864fff8 100644
--- a/src/MsTeamsChannel.php
+++ b/src/MsTeamsChannel.php
@@ -110,7 +110,7 @@ public function send($notifiable, Notification $notification)
      * @param string $type
      * @return string
      */
-    private function getNotificationType($type = 'info') : string
+    private function getNotificationType($type = 'info'): string
     {
         switch ($type) {
             case 'error':
diff --git a/src/MsTeamsMessage.php b/src/MsTeamsMessage.php
index c63da0e..62f2aab 100644
--- a/src/MsTeamsMessage.php
+++ b/src/MsTeamsMessage.php
@@ -23,19 +23,19 @@ public function to($url): self
         return $this;
     }
 
-    public function toUnknown() :bool
+    public function toUnknown(): bool
     {
         return empty($this->payload['url']);
     }
 
-    public function title($title) : self
+    public function title($title): self
     {
         $this->payload['title'] = $title;
 
         return $this;
     }
 
-    public function content($content) : self
+    public function content($content): self
     {
         if (! empty($content)) {
             $this->payload['text'] = $content;
@@ -44,7 +44,7 @@ public function content($content) : self
         return $this;
     }
 
-    public function code($content) : self
+    public function code($content): self
     {
         if (! empty($content)) {
             $this->payload['code'][] = $content;
@@ -53,7 +53,7 @@ public function code($content) : self
         return $this;
     }
 
-    public function type($type) : self
+    public function type($type): self
     {
         $this->payload['type'] = $type;