diff --git a/test/email/package-lock.json b/test/email/package-lock.json
index 3562829..3629d19 100644
--- a/test/email/package-lock.json
+++ b/test/email/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "nodemailer": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-4.3.1.tgz",
-      "integrity": "sha512-ngyDzou/Rbppn9WUOpWNoe25mRrW5wMwRokWanBNLt+3YaxOLmUtrc0ZtHMOgHGFPAYNgKA9H70ELlV3qSHL7Q=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     }
   }
 }
diff --git a/test/email/package.json b/test/email/package.json
index 6c331b4..f24dfd7 100644
--- a/test/email/package.json
+++ b/test/email/package.json
@@ -10,6 +10,6 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "nodemailer": "^4.3.1"
+    "nodemailer": "^6.4.16"
   }
 }