diff --git a/package-lock.json b/package-lock.json
index ff081097..b469ee11 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -179,6 +179,7 @@
       "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
       "dev": true,
+      "optional": true,
       "requires": {
         "hoek": "2.16.3"
       }
@@ -304,6 +305,7 @@
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
       "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
       "dev": true,
+      "optional": true,
       "requires": {
         "delayed-stream": "1.0.0"
       }
@@ -416,7 +418,8 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "depd": {
       "version": "1.1.2",
@@ -569,7 +572,8 @@
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "faye-websocket": {
       "version": "0.10.0",
@@ -1066,7 +1070,8 @@
       "version": "2.16.3",
       "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
       "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "hooker": {
       "version": "0.2.3",
@@ -1624,9 +1629,9 @@
       }
     },
     "nodemailer": {
-      "version": "4.6.3",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-4.6.3.tgz",
-      "integrity": "sha512-1AmOpDZJtyPAO+gfUBfT+MWHbYwQ+DZvb1gvYaTxBZV/lUeysZIt4kDq8Dlwt6ViUZGp3cMGR+D1MNQYyYiVUg=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "nopt": {
       "version": "3.0.6",
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 320d9576..95986723
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "mongoose": "^4.7.6",
     "morgan": "^1.7.0",
     "node-fetch": "^1.7.2",
-    "nodemailer": "^4.0.1",
+    "nodemailer": "^6.4.16",
     "sqlite3": "^3.1.8"
   }
 }