diff --git a/functions/helloworld/package.json b/functions/helloworld/package.json
index 9a85f24721..926bbc44c3 100644
--- a/functions/helloworld/package.json
+++ b/functions/helloworld/package.json
@@ -17,7 +17,7 @@
     "system-test": "export FUNCTIONS_CMD='functions-emulator' && sh test/updateFunctions.sh && export BASE_URL=\"http://localhost:8010/$GCLOUD_PROJECT/$GCF_REGION\" && mocha test/*.test.js --timeout=60000 --exit"
   },
   "dependencies": {
-    "@google-cloud/debug-agent": "^3.0.0",
+    "@google-cloud/debug-agent": "^4.0.0",
     "escape-html": "^1.0.3",
     "pug": "^2.0.3",
     "safe-buffer": "^5.1.2"