diff --git a/alexa-api/test_tts.js b/alexa-api/test_tts.js
index e758a3e..8f59ece 100644
--- a/alexa-api/test_tts.js
+++ b/alexa-api/test_tts.js
@@ -61,7 +61,7 @@ async function main() {
   });
 
   // プレハブを探す
-  const target = devices.find(d => d.serialNumber === 'G0922H085165007R');
+  const target = devices.find(d => d.serialNumber === 'G0922H08525302K5');
   console.log('\nTarget device:', target ? `${target.accountName}` : 'NOT FOUND');
 
   if (!target) { process.exit(1); }