diff --git a/functions/package-lock.json b/functions/package-lock.json
index f4deca8..11f933b 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -1988,9 +1988,9 @@
       "integrity": "sha512-8Df0906+tq/omxuCZD6PqhPaQDYuyJ1d+VITgxoIA8zvQd1ru+nMJcDChHH324MWitIgbVkAkQoGEEVJNpn/PA=="
     },
     "nodemailer": {
-      "version": "6.3.1",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.3.1.tgz",
-      "integrity": "sha512-j0BsSyaMlyadEDEypK/F+xlne2K5m6wzPYMXS/yxKI0s7jmT1kBx6GEKRVbZmyYfKOsjkeC/TiMVDJBI/w5gMQ=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "object-assign": {
       "version": "4.1.1",
diff --git a/functions/package.json b/functions/package.json
index 9ed6d21..595d9fc 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "firebase-admin": "^8.0.0",
     "firebase-functions": "^3.1.0",
-    "nodemailer": "^6.3.1"
+    "nodemailer": "^6.4.16"
   },
   "devDependencies": {
     "eslint": "^5.12.0",