diff --git a/iot/mqtt_example/package.json b/iot/mqtt_example/package.json
index ea886891a8..5ffbe362b5 100644
--- a/iot/mqtt_example/package.json
+++ b/iot/mqtt_example/package.json
@@ -10,7 +10,7 @@
     "@google-cloud/nodejs-repo-tools": "1.4.17",
     "ava": "0.22.0",
     "jsonwebtoken": "7.4.1",
-    "mqtt": "2.7.2",
+    "mqtt": "2.15.0",
     "uuid": "3.1.0",
     "yargs": "8.0.2"
   },