diff --git a/iot/mqtt_example/package.json b/iot/mqtt_example/package.json
index 13d96926b2..7281b03d3a 100644
--- a/iot/mqtt_example/package.json
+++ b/iot/mqtt_example/package.json
@@ -17,7 +17,7 @@
     "system-test": "mocha system-test/*.test.js --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/iot": "^0.2.0",
+    "@google-cloud/iot": "^4.0.0",
     "jsonwebtoken": "^8.5.0",
     "mqtt": "^2.18.8",
     "yargs": "^13.2.2"