diff --git a/package-lock.json b/package-lock.json
index 11ec3d4..9ac7dad 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "MIT",
       "dependencies": {
         "@google-cloud/speech": "^4.9.0",
-        "@google-cloud/text-to-speech": "^3.1.3",
+        "@google-cloud/text-to-speech": "^3.4.0",
         "@jambonz/db-helpers": "^0.6.12",
         "@jambonz/realtimedb-helpers": "^0.4.14",
         "@jambonz/time-series": "^0.1.5",
@@ -577,11 +577,11 @@
       }
     },
     "node_modules/@google-cloud/text-to-speech": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npmjs.org/@google-cloud/text-to-speech/-/text-to-speech-3.2.2.tgz",
-      "integrity": "sha512-QXrZ8AS2AnwYSj/sK2Qf8JQsReHoXGFpnyePknhowsMeCNFVzNwzNpWQyCh+hbqwXjo9o5phyPBnrmnuVTUzPA==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/@google-cloud/text-to-speech/-/text-to-speech-3.4.0.tgz",
+      "integrity": "sha512-0N5QEZxTdv89lG5Dcd7VEaTkL7LuPXWlTf7fmar7reAhsUVh9PeqJJttCXxPaHQ1LY+czvxDzswysHvVdYxL+Q==",
       "dependencies": {
-        "google-gax": "^2.12.0"
+        "google-gax": "^2.24.1"
       },
       "engines": {
         "node": ">=10"
@@ -6372,11 +6372,11 @@
       }
     },
     "@google-cloud/text-to-speech": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npmjs.org/@google-cloud/text-to-speech/-/text-to-speech-3.2.2.tgz",
-      "integrity": "sha512-QXrZ8AS2AnwYSj/sK2Qf8JQsReHoXGFpnyePknhowsMeCNFVzNwzNpWQyCh+hbqwXjo9o5phyPBnrmnuVTUzPA==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/@google-cloud/text-to-speech/-/text-to-speech-3.4.0.tgz",
+      "integrity": "sha512-0N5QEZxTdv89lG5Dcd7VEaTkL7LuPXWlTf7fmar7reAhsUVh9PeqJJttCXxPaHQ1LY+czvxDzswysHvVdYxL+Q==",
       "requires": {
-        "google-gax": "^2.12.0"
+        "google-gax": "^2.24.1"
       }
     },
     "@grpc/grpc-js": {
diff --git a/package.json b/package.json
index 8f14b41..059f7c0 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "@google-cloud/speech": "^4.9.0",
-    "@google-cloud/text-to-speech": "^3.1.3",
+    "@google-cloud/text-to-speech": "^3.4.0",
     "@jambonz/db-helpers": "^0.6.12",
     "@jambonz/realtimedb-helpers": "^0.4.14",
     "@jambonz/time-series": "^0.1.5",