diff --git a/backend/package-lock.json b/backend/package-lock.json
index 4aec0ff..6509cfc 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -387,7 +387,7 @@
         },
         "readable-stream": {
           "version": "1.1.14",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
           "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
           "requires": {
             "core-util-is": "~1.0.0",
@@ -398,7 +398,7 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
         }
       }
@@ -787,7 +787,7 @@
         },
         "readable-stream": {
           "version": "1.1.14",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
           "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
           "requires": {
             "core-util-is": "~1.0.0",
@@ -798,7 +798,7 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
         }
       }
@@ -1218,7 +1218,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -1236,11 +1237,13 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -1253,15 +1256,18 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1364,7 +1370,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1374,6 +1381,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -1386,17 +1394,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -1413,6 +1424,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -1485,7 +1497,8 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -1495,6 +1508,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -1570,7 +1584,8 @@
         },
         "safe-buffer": {
           "version": "5.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -1600,6 +1615,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -1617,6 +1633,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -1655,11 +1672,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -2349,7 +2368,7 @@
       "dependencies": {
         "minimist": {
           "version": "0.0.8",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
         }
       }
@@ -2540,9 +2559,9 @@
       "integrity": "sha512-eev1F0IPKSu3zvASMtH8ic4znGpfXdq9yc8yc/EVx6bk57u7bS2iZKVZ8ll1ZeH/IEQ3qFb04FB70PCNXSIp4w=="
     },
     "nodemailer": {
-      "version": "4.7.0",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-4.7.0.tgz",
-      "integrity": "sha512-IludxDypFpYw4xpzKdMAozBSkzKHmNBvGanUREjJItgJ2NYcK/s8+PggVhj7c2yGFQykKsnnmv1+Aqo0ZfjHmw=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     },
     "nodemon": {
       "version": "1.18.9",
diff --git a/backend/package.json b/backend/package.json
index ea39197..10c20b6 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -36,7 +36,7 @@
     "multer": "^1.4.1",
     "multer-gridfs-storage": "^3.2.3",
     "node-datetime": "^2.1.2",
-    "nodemailer": "^4.7.0",
+    "nodemailer": "^6.4.16",
     "nodemon": "^1.18.9",
     "passport": "^0.4.0",
     "passport-local": "^1.0.0",