diff --git a/package-lock.json b/package-lock.json
index 6c3af9d..7ccb592 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -562,9 +562,9 @@
       "dev": true
     },
     "@types/nodemailer": {
-      "version": "4.6.7",
-      "resolved": "https://registry.npmjs.org/@types/nodemailer/-/nodemailer-4.6.7.tgz",
-      "integrity": "sha512-slR1wz8I8O20CHNBNhYhObRZ8zeG5FnfFUWLZKk1f0UDYaLZOsBjUfCC9VEFi7oSRCC886DfKmq1JncPDMOrng==",
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/@types/nodemailer/-/nodemailer-6.4.0.tgz",
+      "integrity": "sha512-KY7bFWB0MahRZvVW4CuW83qcCDny59pJJ0MQ5ifvfcjNwPlIT0vW4uARO4u1gtkYnWdhSvURegecY/tzcukJcA==",
       "dev": true,
       "requires": {
         "@types/node": "*"
diff --git a/package.json b/package.json
index 5fa69cd..dd4e10a 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   "devDependencies": {
     "@types/express": "4.16.1",
     "@types/node-xlsx": "0.12.1",
-    "@types/nodemailer": "4.6.7",
+    "@types/nodemailer": "6.4.0",
     "@types/dotenv": "6.1.1",
     "@types/jest": "24.0.11",
     "@types/lodash": "4.14.123",
diff --git a/yarn.lock b/yarn.lock
index 9dfc2ed..f530433 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -392,10 +392,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.0.tgz#b0df8d6ef9b5001b2be3a94d909ce3c29a80f9e1"
   integrity sha512-rx29MMkRdVmzunmiA4lzBYJNnXsW/PhG4kMBy2ATsYaDjGGR75dCFEVVROKpNwlVdcUX3xxlghKQOeDPBJobng==
 
-"@types/nodemailer@4.6.7":
-  version "4.6.7"
-  resolved "https://registry.yarnpkg.com/@types/nodemailer/-/nodemailer-4.6.7.tgz#ac3c594fac6daf7f71eb4d31c9e4c88b62dbcb87"
-  integrity sha512-slR1wz8I8O20CHNBNhYhObRZ8zeG5FnfFUWLZKk1f0UDYaLZOsBjUfCC9VEFi7oSRCC886DfKmq1JncPDMOrng==
+"@types/nodemailer@6.4.0":
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/@types/nodemailer/-/nodemailer-6.4.0.tgz#d8c039be3ed685c4719a026455555be82c124b74"
+  integrity sha512-KY7bFWB0MahRZvVW4CuW83qcCDny59pJJ0MQ5ifvfcjNwPlIT0vW4uARO4u1gtkYnWdhSvURegecY/tzcukJcA==
   dependencies:
     "@types/node" "*"