From f7716b89c984ba5ec965ddf8a83aabbe28946566 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Kubie=C5=84?= <mkubien@gmail.com>
Date: Sun, 5 Jul 2026 02:23:43 +0200
Subject: [PATCH] Cast TTL option to string in headers

---
 src/WebPush.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/WebPush.php b/src/WebPush.php
index 0fdb794..62ae942 100644
--- a/src/WebPush.php
+++ b/src/WebPush.php
@@ -286,7 +286,7 @@ protected function prepare(array $notifications): array
                 $content = '';
             }
 
-            $headers['TTL'] = $options['TTL'];
+            $headers['TTL'] = (string) $options['TTL'];
 
             if (isset($options['urgency'])) {
                 $headers['Urgency'] = $options['urgency'];