diff --git a/lib/middleware.js b/lib/middleware.js
index edcb8a89..61dc3d56 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -28,7 +28,7 @@ module.exports = function(srf, logger) {
     writeAlerts,
     AlertType
   } = srf.locals;
-  const {lookupAccountDetails} = dbUtils(logger, srf);
+  const {lookupAccountDetails, lookupGoogleCustomVoice} = dbUtils(logger, srf);
 
   async function initLocals(req, res, next) {
     const callId = req.get('Call-ID');
@@ -299,6 +299,21 @@ module.exports = function(srf, logger) {
         else app2.notifier = {request: () => {}, close: () => {}};
       }
 
+      // Resolve application.speech_synthesis_voice if it's custom voice
+      if (app2.speech_synthesis_vendor === 'google' && app2.speech_synthesis_voice.startsWith('custom_')) {
+        const arr = /custom_(.*)/.exec(app2.speech_synthesis_voice);
+        if (arr) {
+          const google_custom_voice_sid = arr[1];
+          const [custom_voice] = await lookupGoogleCustomVoice(google_custom_voice_sid);
+          if (custom_voice) {
+            app2.speech_synthesis_voice = {
+              reportedUsage: custom_voice.reported_usage,
+              model: custom_voice.model
+            };
+          }
+        }
+      }
+
       req.locals.application = app2;
 
       // eslint-disable-next-line no-unused-vars
diff --git a/lib/utils/db-utils.js b/lib/utils/db-utils.js
index 2ca608b5..a1396ce0 100644
--- a/lib/utils/db-utils.js
+++ b/lib/utils/db-utils.js
@@ -27,6 +27,9 @@ WHERE pn.account_sid IS NULL
 AND pn.service_provider_sid = 
 (SELECT service_provider_sid from accounts where account_sid = ?) 
 AND pn.number = ?`;
+const sqlQueryGoogleCustomVoices = `SELECT *
+FROM google_custom_voices
+WHERE google_custom_voice_sid = ?`;
 
 const speechMapper = (cred) => {
   const {credential, ...obj} = cred;
@@ -161,10 +164,22 @@ module.exports = (logger, srf) => {
     }
   };
 
+  const lookupGoogleCustomVoice = async(google_custom_voice_sid) => {
+    const pp = pool.promise();
+    try {
+      const [r] = await pp.query(sqlQueryGoogleCustomVoices, [google_custom_voice_sid]);
+      return r;
+
+    } catch (err) {
+      logger.error({err}, `lookupGoogleCustomVoices: Error ${google_custom_voice_sid}`);
+    }
+  };
+
   return {
     lookupAccountDetails,
     updateSpeechCredentialLastUsed,
     lookupCarrier,
-    lookupCarrierByPhoneNumber
+    lookupCarrierByPhoneNumber,
+    lookupGoogleCustomVoice
   };
 };
diff --git a/package-lock.json b/package-lock.json
index fc3c3e9a..a8dc5432 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
         "@jambonz/http-health-check": "^0.0.1",
         "@jambonz/mw-registrar": "^0.2.4",
         "@jambonz/realtimedb-helpers": "^0.8.6",
-        "@jambonz/speech-utils": "^0.0.22",
+        "@jambonz/speech-utils": "^0.0.24",
         "@jambonz/stats-collector": "^0.1.9",
         "@jambonz/time-series": "^0.2.8",
         "@jambonz/verb-specifications": "^0.0.44",
@@ -3145,9 +3145,9 @@
       }
     },
     "node_modules/@jambonz/speech-utils": {
-      "version": "0.0.22",
-      "resolved": "https://registry.npmjs.org/@jambonz/speech-utils/-/speech-utils-0.0.22.tgz",
-      "integrity": "sha512-+gFWDTNUbf3RwG9a7PInJom0YKiGgW8i2m6WFRjJuSk1StiY4BKWr+sE6JL9SBHz9UrjyLb8P2tfJKwoo/JKSA==",
+      "version": "0.0.24",
+      "resolved": "https://registry.npmjs.org/@jambonz/speech-utils/-/speech-utils-0.0.24.tgz",
+      "integrity": "sha512-FpywxkjohC7wBBS9Xz9pRYXyO9D/tt2xgHFseWSoe0kO/6DbFudoLAI5uGB7AyUbTeGeKBiVZDJSNadsM4Iv4A==",
       "dependencies": {
         "@aws-sdk/client-polly": "^3.359.0",
         "@google-cloud/text-to-speech": "^4.2.1",
@@ -13239,9 +13239,9 @@
       }
     },
     "@jambonz/speech-utils": {
-      "version": "0.0.22",
-      "resolved": "https://registry.npmjs.org/@jambonz/speech-utils/-/speech-utils-0.0.22.tgz",
-      "integrity": "sha512-+gFWDTNUbf3RwG9a7PInJom0YKiGgW8i2m6WFRjJuSk1StiY4BKWr+sE6JL9SBHz9UrjyLb8P2tfJKwoo/JKSA==",
+      "version": "0.0.24",
+      "resolved": "https://registry.npmjs.org/@jambonz/speech-utils/-/speech-utils-0.0.24.tgz",
+      "integrity": "sha512-FpywxkjohC7wBBS9Xz9pRYXyO9D/tt2xgHFseWSoe0kO/6DbFudoLAI5uGB7AyUbTeGeKBiVZDJSNadsM4Iv4A==",
       "requires": {
         "@aws-sdk/client-polly": "^3.359.0",
         "@google-cloud/text-to-speech": "^4.2.1",
diff --git a/package.json b/package.json
index 951fe9b2..5a4df70b 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@jambonz/http-health-check": "^0.0.1",
     "@jambonz/mw-registrar": "^0.2.4",
     "@jambonz/realtimedb-helpers": "^0.8.6",
-    "@jambonz/speech-utils": "^0.0.22",
+    "@jambonz/speech-utils": "^0.0.24",
     "@jambonz/stats-collector": "^0.1.9",
     "@jambonz/time-series": "^0.2.8",
     "@jambonz/verb-specifications": "^0.0.44",