diff --git a/SmsapiTransportFactory.php b/SmsapiTransportFactory.php
index 69cfcdc..13959bd 100644
--- a/SmsapiTransportFactory.php
+++ b/SmsapiTransportFactory.php
@@ -31,8 +31,8 @@ public function create(Dsn $dsn): SmsapiTransport
         $authToken = $this->getUser($dsn);
         $from = $dsn->getOption('from', '');
         $host = 'default' === $dsn->getHost() ? null : $dsn->getHost();
-        $fast = filter_var($dsn->getOption('fast', false), \FILTER_VALIDATE_BOOL);
-        $test = filter_var($dsn->getOption('test', false), \FILTER_VALIDATE_BOOL);
+        $fast = $dsn->getBooleanOption('fast');
+        $test = $dsn->getBooleanOption('test');
         $port = $dsn->getPort();
 
         return (new SmsapiTransport($authToken, $from, $this->client, $this->dispatcher))->setFast($fast)->setHost($host)->setPort($port)->setTest($test);
diff --git a/composer.json b/composer.json
index 656d455..40e2710 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": ">=8.2",
         "symfony/http-client": "^6.4|^7.0",
-        "symfony/notifier": "^7.2"
+        "symfony/notifier": "^7.3"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Notifier\\Bridge\\Smsapi\\": "" },