diff --git a/app-to-phone-js/package.json b/app-to-phone-js/package.json
index 8d30b93..6abc9b1 100644
--- a/app-to-phone-js/package.json
+++ b/app-to-phone-js/package.json
@@ -12,6 +12,6 @@
   "dependencies": {
     "express": "^4.17.1",
     "localtunnel": "^2.0.1",
-    "nexmo-client": "^7.0.1"
+    "nexmo-client": "^9.0.0"
   }
 }