diff --git a/samples/package.json b/samples/package.json
index 2cb90f5b..803ec3b5 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -17,7 +17,7 @@
     "@google-cloud/compute": "^0.11.0",
     "@sendgrid/mail": "^6.3.1",
     "node-fetch": "^2.3.0",
-    "nodemailer": "^4.3.1",
+    "nodemailer": "^5.0.0",
     "nodemailer-smtp-transport": "^2.7.4"
   },
   "devDependencies": {