diff --git a/package-lock.json b/package-lock.json
index 196bfea..efe8e4c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4700,9 +4700,9 @@
       "integrity": "sha512-Xsmf94D/DdeDISAECUaxXVxhh+kHdbOQE4CnP4igo3HXL3BSmmUpD5M7orH434EZZwBTFF2xe5SgsQr/wOBuNw=="
     },
     "nodemailer": {
-      "version": "4.6.8",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-4.6.8.tgz",
-      "integrity": "sha512-A3s7EM/426OBIZbLHXq2KkgvmKbn2Xga4m4G+ZUA4IaZvG8PcZXrFh+2E4VaS2o+emhuUVRnzKN2YmpkXQ9qwA=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "normalize-package-data": {
       "version": "2.4.0",
@@ -4767,6 +4767,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -5949,7 +5950,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
diff --git a/package.json b/package.json
index ba227b7..f9767af 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "lodash": "^4.17.10",
     "memory-cache": "^0.2.0",
     "mysql2": "^1.5.3",
-    "nodemailer": "^4.6.8",
+    "nodemailer": "^6.4.16",
     "uuid": "^3.3.2"
   },
   "devDependencies": {