diff --git a/nodejs-main-subjects/04-npm/04-package-json/app2/package-lock.json b/nodejs-main-subjects/04-npm/04-package-json/app2/package-lock.json
index 3db3bf3..e0a0ed2 100644
--- a/nodejs-main-subjects/04-npm/04-package-json/app2/package-lock.json
+++ b/nodejs-main-subjects/04-npm/04-package-json/app2/package-lock.json
@@ -10,9 +10,9 @@
       "integrity": "sha512-VxBKmeNcqQdiUQUW2Tzq0t377b54N2bMtXO/qiLa+6eRRmmC4qT3D4OnTGoT/U6O9aklQ/jTwbOtRMTTY8G0Ig=="
     },
     "nodemailer": {
-      "version": "3.1.8",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-3.1.8.tgz",
-      "integrity": "sha1-/r+sy0vSc2eEc6MJxstLSi88SOM="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "slugify": {
       "version": "1.3.2",
diff --git a/nodejs-main-subjects/04-npm/04-package-json/app2/package.json b/nodejs-main-subjects/04-npm/04-package-json/app2/package.json
index c14cdbe..e1dfe8f 100644
--- a/nodejs-main-subjects/04-npm/04-package-json/app2/package.json
+++ b/nodejs-main-subjects/04-npm/04-package-json/app2/package.json
@@ -13,7 +13,7 @@
   "license": "ISC",
   "dependencies": {
     "crypto": "^1.0.1",
-    "nodemailer": "^3.1.8",
+    "nodemailer": "^6.4.16",
     "slugify": "^1.3.2",
     "underscore": "^1.9.1"
   }