diff --git a/package.json b/package.json
index a25ae7c5..9efe1e18 100644
--- a/package.json
+++ b/package.json
@@ -52,8 +52,8 @@
     "loopback-datasource-juggler": "^3.18.0",
     "loopback-filters": "^1.0.0",
     "loopback-phase": "^3.0.0",
-    "nodemailer": "^2.5.0",
-    "nodemailer-stub-transport": "^1.0.0",
+    "nodemailer": "^4.6.5",
+    "nodemailer-stub-transport": "^1.1.0",
     "serve-favicon": "^2.2.0",
     "stable": "^0.1.5",
     "strong-globalize": "^3.1.0",