diff --git a/package.json b/package.json
index eb641eb9f..a4d4df9ed 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,7 @@
     "husky": "7.0.2",
     "lint-staged": "11.2.0",
     "jest": "27.0.6",
-    "nodemailer": "6.6.2",
+    "nodemailer": "6.6.5",
     "nodemailer-mock": "1.5.11",
     "prettier": "2.3.2",
     "reflect-metadata": "0.1.13",
diff --git a/sample/01-basic/package.json b/sample/01-basic/package.json
index 960b01be0..1cec1d86e 100644
--- a/sample/01-basic/package.json
+++ b/sample/01-basic/package.json
@@ -25,7 +25,7 @@
     "@nestjs/core": "8.0.10",
     "@nestjs/platform-express": "8.0.10",
     "dotenv": "10.0.0",
-    "nodemailer": "6.6.2",
+    "nodemailer": "6.6.5",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
     "rxjs": "7.3.1"
diff --git a/sample/02-custom-template-adapter/package.json b/sample/02-custom-template-adapter/package.json
index 03a4abe3e..289e99c1c 100644
--- a/sample/02-custom-template-adapter/package.json
+++ b/sample/02-custom-template-adapter/package.json
@@ -25,7 +25,7 @@
     "@nestjs/common": "8.0.10",
     "@nestjs/core": "8.0.10",
     "@nestjs/platform-express": "8.0.10",
-    "nodemailer": "6.6.2",
+    "nodemailer": "6.6.5",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
     "rxjs": "7.3.1",
diff --git a/yarn.lock b/yarn.lock
index b5d7fb8bf..7d725cf71 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4452,10 +4452,10 @@ nodemailer@6.4.18:
   resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.4.18.tgz#2788c85792844fc17befda019031609017f4b9a1"
   integrity sha512-ht9cXxQ+lTC+t00vkSIpKHIyM4aXIsQ1tcbQCn5IOnxYHi81W2XOaU66EQBFFpbtzLEBTC94gmkbD4mGZQzVpA==
 
-nodemailer@6.6.2:
-  version "6.6.2"
-  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.6.2.tgz#e184c9ed5bee245a3e0bcabc7255866385757114"
-  integrity sha512-YSzu7TLbI+bsjCis/TZlAXBoM4y93HhlIgo0P5oiA2ua9Z4k+E2Fod//ybIzdJxOlXGRcHIh/WaeCBehvxZb/Q==
+nodemailer@6.6.5:
+  version "6.6.5"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.6.5.tgz#f9f6953cee5cfe82cbea152eeddacf7a0442049a"
+  integrity sha512-C/v856DBijUzHcHIgGpQoTrfsH3suKIRAGliIzCstatM2cAa+MYX3LuyCrABiO/cdJTxgBBHXxV1ztiqUwst5A==
 
 nodemailer@^6.5.0, nodemailer@^6.x:
   version "6.5.0"