diff --git a/package-lock.json b/package-lock.json
index ff3d7e8..5dcf8ea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -312,7 +312,7 @@
       "dependencies": {
         "combined-stream": {
           "version": "1.0.6",
-          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
           "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
           "requires": {
             "delayed-stream": "~1.0.0"
@@ -508,9 +508,9 @@
       "integrity": "sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk="
     },
     "nodemailer": {
-      "version": "4.6.8",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-4.6.8.tgz",
-      "integrity": "sha512-A3s7EM/426OBIZbLHXq2KkgvmKbn2Xga4m4G+ZUA4IaZvG8PcZXrFh+2E4VaS2o+emhuUVRnzKN2YmpkXQ9qwA=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "oauth-sign": {
       "version": "0.9.0",
diff --git a/package.json b/package.json
index 3ec26ca..c83406d 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,6 @@
     "body-parser": "^1.18.3",
     "dotenv": "^6.1.0",
     "express": "^4.16.4",
-    "nodemailer": "^4.6.8"
+    "nodemailer": "^6.4.16"
   }
 }