diff --git a/samples/custom-template-adapter/package.json b/samples/custom-template-adapter/package.json
index 6e136319..09e6e7a3 100644
--- a/samples/custom-template-adapter/package.json
+++ b/samples/custom-template-adapter/package.json
@@ -20,7 +20,7 @@
     "@nestjs/common": "11.1.21",
     "@nestjs/core": "11.1.21",
     "@nestjs/platform-express": "11.1.21",
-    "nodemailer": "8.0.7",
+    "nodemailer": "9.0.1",
     "reflect-metadata": "0.2.2",
     "rimraf": "6.1.3",
     "rxjs": "7.8.2",