diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 3365ff0e..ff6973bd 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -23,6 +23,9 @@
     <testsuite name="verify">
       <directory>test/Verify</directory>
     </testsuite>
+    <testsuite name="application">
+      <directory>test/Application</directory>
+    </testsuite>
     <testsuite name="verify2">
       <directory>test/Verify2</directory>
     </testsuite>
diff --git a/src/Application/Application.php b/src/Application/Application.php
index 3f3eed30..ee12922a 100644
--- a/src/Application/Application.php
+++ b/src/Application/Application.php
@@ -230,7 +230,7 @@ public function toArray(): array
     {
         // Build up capabilities that are set
         $availableCapabilities = [
-            'voice' => [VoiceConfig::ANSWER, VoiceConfig::EVENT],
+            'voice' => [VoiceConfig::ANSWER, VoiceConfig::EVENT, VoiceConfig::FALLBACK_ANSWER_URL],
             'messages' => [MessagesConfig::INBOUND, MessagesConfig::STATUS],
             'rtc' => [RtcConfig::EVENT]
         ];
diff --git a/src/Application/VoiceConfig.php b/src/Application/VoiceConfig.php
index b957b317..47a83a46 100644
--- a/src/Application/VoiceConfig.php
+++ b/src/Application/VoiceConfig.php
@@ -10,6 +10,8 @@ class VoiceConfig
 {
     public const EVENT = 'event_url';
     public const ANSWER = 'answer_url';
+    public const FALLBACK_ANSWER_URL = 'fallback_answer_url';
+
     protected ?bool $signedCallbacks = null;
     protected ?int $conversationsTtl = null;
     protected ?string $region = null;
diff --git a/src/Application/Webhook.php b/src/Application/Webhook.php
index 88ab3457..e8f488e2 100644
--- a/src/Application/Webhook.php
+++ b/src/Application/Webhook.php
@@ -8,9 +8,7 @@ class Webhook implements \Stringable
 {
     public const METHOD_POST = 'POST';
     public const METHOD_GET = 'GET';
-
     public ?string $socketTimeout = null;
-
     public ?string $connectionTimeout = null;
 
     public function __construct(protected ?string $url, protected ?string $method = self::METHOD_POST)
diff --git a/test/Application/ApplicationTest.php b/test/Application/ApplicationTest.php
index 7ad7b39d..d840886e 100644
--- a/test/Application/ApplicationTest.php
+++ b/test/Application/ApplicationTest.php
@@ -9,6 +9,7 @@
 use Vonage\Application\MessagesConfig;
 use Vonage\Application\RtcConfig;
 use Vonage\Application\VoiceConfig;
+use Vonage\Application\Webhook;
 use Vonage\Client\Exception\Exception as ClientException;
 use VonageTest\Traits\HTTPTestTrait;
 use VonageTest\VonageTestCase;
@@ -164,4 +165,17 @@ public function testConfigCanBeCopied(): void
         $webhook = $otherapp->getVoiceConfig()->getWebhook(VoiceConfig::ANSWER);
         $this->assertEquals('https://example.com/webhooks/answer', $webhook);
     }
+
+    public function testCanSetFallbackUrlWebhook(): void
+    {
+        $application = new Application();
+        $application->setName('my application');
+        $application->getVoiceConfig()->setRegion('eu-west');
+
+        $webhook = new Webhook('https://example.com/fallbackUrl', 'GET');
+        $application->getVoiceConfig()->setWebhook(\Vonage\Application\VoiceConfig::FALLBACK_ANSWER_URL, $webhook);
+
+        $output = $application->toArray();
+        $this->assertEquals('https://example.com/fallbackUrl', $output['capabilities']['voice']['webhooks']['fallback_answer_url']['address']);
+    }
 }