diff --git a/src/Illuminate/Notifications/Events/NotificationFailed.php b/src/Illuminate/Notifications/Events/NotificationFailed.php
index 1ddd965395b0..b69e1c5485af 100644
--- a/src/Illuminate/Notifications/Events/NotificationFailed.php
+++ b/src/Illuminate/Notifications/Events/NotificationFailed.php
@@ -2,8 +2,13 @@
 
 namespace Illuminate\Notifications\Events;
 
+use Illuminate\Bus\Queueable;
+use Illuminate\Queue\SerializesModels;
+
 class NotificationFailed
 {
+    use Queueable, SerializesModels;
+
     /**
      * The notifiable entity who received the notification.
      *
diff --git a/src/Illuminate/Notifications/Events/NotificationSending.php b/src/Illuminate/Notifications/Events/NotificationSending.php
index 81a218ece563..6efd1d06de93 100644
--- a/src/Illuminate/Notifications/Events/NotificationSending.php
+++ b/src/Illuminate/Notifications/Events/NotificationSending.php
@@ -2,8 +2,13 @@
 
 namespace Illuminate\Notifications\Events;
 
+use Illuminate\Bus\Queueable;
+use Illuminate\Queue\SerializesModels;
+
 class NotificationSending
 {
+    use Queueable, SerializesModels;
+
     /**
      * The notifiable entity who received the notification.
      *
diff --git a/src/Illuminate/Notifications/Events/NotificationSent.php b/src/Illuminate/Notifications/Events/NotificationSent.php
index 725d880f51fe..4f09069148eb 100644
--- a/src/Illuminate/Notifications/Events/NotificationSent.php
+++ b/src/Illuminate/Notifications/Events/NotificationSent.php
@@ -2,8 +2,13 @@
 
 namespace Illuminate\Notifications\Events;
 
+use Illuminate\Bus\Queueable;
+use Illuminate\Queue\SerializesModels;
+
 class NotificationSent
 {
+    use Queueable, SerializesModels;
+
     /**
      * The notifiable entity who received the notification.
      *