diff --git a/src/Voice/Bxml/StartTranscription.php b/src/Voice/Bxml/StartTranscription.php
index c9c81cc..6820ce2 100644
--- a/src/Voice/Bxml/StartTranscription.php
+++ b/src/Voice/Bxml/StartTranscription.php
@@ -48,6 +48,10 @@ class StartTranscription extends Verb {
      * @var bool
      */
     private $stability;
+    /**
+     * @var bool
+     */
+    private $stabilized;
 
     /**
      * Sets the destination attribute for StartTranscription
@@ -131,6 +135,17 @@ public function stability( bool $stability): StartTranscription {
         return $this;
     }
 
+    /**
+     * Sets the stabilized attribute for StartTranscription
+     *
+     * @param bool Whether to send transcription update events to the specified destination only after they have become stable. Requires destination. Defaults to true.
+     * 
+     */
+    public function stabilized( bool $stabilized): StartTranscription {
+        $this->stabilized = $stabilized;
+        return $this;
+    }
+
     /**
      * Sets the <CustomParam/> tag. You may specify up to 12 <CustomParam/> elements nested within a <StartTranscription> tag. These elements define optional user specified parameters that will be sent to the destination URL when the real-time transcription is first started.
      *
@@ -176,6 +191,10 @@ public function toBxml(DOMDocument $doc): DOMElement {
             $element->setattribute("stablilty", $this->stability);
         }
 
+        if(isset($this->stabilized)) {
+            $element->setattribute("stabilized", $this->stabilized);
+        }
+
         if(isset($this->customParams)) {
             foreach ($this->customParams as $customParam) {
                 $element->appendChild($customParam->toBxml($doc));