diff --git a/package.json b/package.json
index 17f0b6b..2d15409 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "coveralls": "^3.0.2",
     "mocha": "^5.2.0",
     "mocha-lcov-reporter": "^1.3.0",
-    "nodemailer": "^4.6.7",
+    "nodemailer": "^6.4.6",
     "nyc": "^12.0.1"
   }
 }