diff --git a/src/Commands/HandleMessageReceived.php b/src/Commands/HandleMessageReceived.php
index b4c98c2..26c6023 100644
--- a/src/Commands/HandleMessageReceived.php
+++ b/src/Commands/HandleMessageReceived.php
@@ -2,9 +2,9 @@
 
 namespace DirectoryTree\ImapEngine\Laravel\Commands;
 
+use Carbon\CarbonInterface;
 use DirectoryTree\ImapEngine\Laravel\Events\MessageReceived;
 use DirectoryTree\ImapEngine\MessageInterface;
-use Illuminate\Support\Carbon;
 use Illuminate\Support\Facades\Date;
 use Illuminate\Support\Facades\Event;
 
@@ -16,7 +16,7 @@ class HandleMessageReceived
     public function __construct(
         protected WatchMailbox $command,
         protected int &$attempts = 0,
-        protected ?Carbon &$lastReceivedAt = null,
+        protected ?CarbonInterface &$lastReceivedAt = null,
     ) {}
 
     /**
diff --git a/src/Events/MailboxWatchAttemptsExceeded.php b/src/Events/MailboxWatchAttemptsExceeded.php
index 5c61262..f0e88c5 100644
--- a/src/Events/MailboxWatchAttemptsExceeded.php
+++ b/src/Events/MailboxWatchAttemptsExceeded.php
@@ -2,7 +2,7 @@
 
 namespace DirectoryTree\ImapEngine\Laravel\Events;
 
-use Carbon\Carbon;
+use Carbon\CarbonInterface;
 use Exception;
 
 class MailboxWatchAttemptsExceeded
@@ -14,6 +14,6 @@ public function __construct(
         public string $mailbox,
         public int $attempts,
         public Exception $exception,
-        public ?Carbon $lastReceivedAt = null,
+        public ?CarbonInterface $lastReceivedAt = null,
     ) {}
 }