diff --git a/alexa-api/server.js b/alexa-api/server.js
index 67ba5b8..9e4afd7 100644
--- a/alexa-api/server.js
+++ b/alexa-api/server.js
@@ -128,20 +128,22 @@ app.post('/speak', async function(req, res) {
 
     console.log('    -> ' + target.accountName + ' (type=' + target.deviceType + ', serial=' + target.serialNumber + ')');
 
-    var sequenceObj = {
-      '@type': 'com.amazon.alexa.behaviors.model.Sequence',
-      startNode: {
-        '@type': 'com.amazon.alexa.behaviors.model.OpaquePayloadOperationNode',
-        type: 'Alexa.SpeakSsml',   // ← ここ変更
-        operationPayload: {
-          deviceType: target.deviceType,
-          deviceSerialNumber: target.serialNumber,
-          customerId: customerId,
-          locale: 'ja-JP',
-          textToSpeak: text
-        },
-      },
-    };
+var ssml = '<speak>' + text + '</speak>';
+
+var sequenceObj = {
+  '@type': 'com.amazon.alexa.behaviors.model.Sequence',
+  startNode: {
+    '@type': 'com.amazon.alexa.behaviors.model.OpaquePayloadOperationNode',
+    type: 'Alexa.SpeakSsml',
+    operationPayload: {
+      deviceType: target.deviceType,
+      deviceSerialNumber: target.serialNumber,
+      customerId: customerId,
+      locale: 'ja-JP',
+      textToSpeak: ssml
+    },
+  },
+};
 
     var bodyStr = JSON.stringify({
       behaviorId: 'PREVIEW',