diff --git a/package-lock.json b/package-lock.json
index ceac4e9..ffde50f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -54,7 +54,8 @@
     "acorn": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
-      "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
+      "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
+      "optional": true
     },
     "acorn-globals": {
       "version": "1.0.9",
@@ -481,7 +482,8 @@
     "cssom": {
       "version": "0.3.8",
       "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.8.tgz",
-      "integrity": "sha512-b0tGHbfegbhPJpxpiBPU2sCkigAqtM9O121le6bbOlgyV+NyGyCmVfJ6QW9eRjz8CpNfWEOYBIMIGRYkLwsIYg=="
+      "integrity": "sha512-b0tGHbfegbhPJpxpiBPU2sCkigAqtM9O121le6bbOlgyV+NyGyCmVfJ6QW9eRjz8CpNfWEOYBIMIGRYkLwsIYg==",
+      "optional": true
     },
     "cssstyle": {
       "version": "0.2.37",
@@ -1451,9 +1453,9 @@
       "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
     },
     "nodemailer": {
-      "version": "6.4.13",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.13.tgz",
-      "integrity": "sha512-XmtiiKza2Cqtr+ZRMchMZn9s2nmwQDeakbf+yL0ODsIXOv58UZgk/MKPOkDKqY+mvxHs87PrJK7Nf/tcpKHqYQ=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "nodemailer-sendgrid-transport": {
       "version": "0.2.0",
@@ -1619,7 +1621,8 @@
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
-      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ="
+      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
+      "optional": true
     },
     "process-nextick-args": {
       "version": "2.0.1",
@@ -2082,6 +2085,7 @@
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "optional": true,
       "requires": {
         "prelude-ls": "~1.1.2"
       }
diff --git a/package.json b/package.json
index 121f1f6..e332651 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "is-empty": "^1.2.0",
     "jsonwebtoken": "^8.5.1",
     "mongoose": "^5.9.21",
-    "nodemailer": "^6.4.13",
+    "nodemailer": "^6.4.16",
     "nodemailer-sendgrid-transport": "^0.2.0",
     "passport": "^0.4.1",
     "passport-jwt": "^4.0.0",