diff --git a/package.json b/package.json
index 7103f65..2be64ca 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "mathjs": "^5.0.0",
     "moment": "^2.21.0",
     "mysql": "^2.15.0",
-    "nodemailer": "^5.0.0",
+    "nodemailer": "^6.0.0",
     "performance-now": "^2.1.0",
     "pretty-ms": "^4.0.0",
     "querystring": "^0.2.0",