diff --git a/iot/mqtt_example/package.json b/iot/mqtt_example/package.json
index d074cf187c..ab6ccfb34b 100644
--- a/iot/mqtt_example/package.json
+++ b/iot/mqtt_example/package.json
@@ -18,7 +18,7 @@
   "dependencies": {
     "jsonwebtoken": "8.4.0",
     "mqtt": "2.18.8",
-    "yargs": "12.0.5"
+    "yargs": "13.2.4"
   },
   "devDependencies": {
     "@google-cloud/pubsub": "0.22.2",