diff --git a/package-lock.json b/package-lock.json
index f751433..300a4bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -226,13 +226,15 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-1.0.0.tgz",
           "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-glob": {
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-2.0.1.tgz",
           "integrity": "sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-extglob": "1.0.0"
           }
@@ -264,6 +266,7 @@
           "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
           "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
           "dev": true,
+          "optional": true,
           "requires": {
             "remove-trailing-separator": "1.1.0"
           }
@@ -2017,13 +2020,15 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-1.0.0.tgz",
           "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-glob": {
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-2.0.1.tgz",
           "integrity": "sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-extglob": "1.0.0"
           }
@@ -2847,9 +2852,9 @@
       }
     },
     "nodemailer": {
-      "version": "6.3.0",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.3.0.tgz",
-      "integrity": "sha512-TEHBNBPHv7Ie/0o3HXnb7xrPSSQmH1dXwQKRaMKDBGt/ZN54lvDVujP6hKkO/vjkIYL9rK8kHSG11+G42Nhxuw=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "nodemon": {
       "version": "1.19.1",
@@ -3409,7 +3414,8 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-1.0.0.tgz",
           "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-glob": {
           "version": "2.0.1",
diff --git a/package.json b/package.json
index 919335d..b839621 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "http": "0.0.0",
     "jsonwebtoken": "^8.5.1",
     "mongoose": "^5.6.8",
-    "nodemailer": "^6.3.0",
+    "nodemailer": "^6.4.16",
     "nodemon": "^1.19.1"
   }
 }