diff --git a/back-end/package-lock.json b/back-end/package-lock.json
index 31f16ea..e0a857e 100644
--- a/back-end/package-lock.json
+++ b/back-end/package-lock.json
@@ -33,7 +33,7 @@
     },
     "acorn": {
       "version": "3.3.0",
-      "resolved": "http://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
       "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo="
     },
     "acorn-globals": {
@@ -1153,7 +1153,7 @@
     },
     "chalk": {
       "version": "1.1.3",
-      "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
       "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
       "requires": {
         "ansi-styles": "^2.2.1",
@@ -2098,7 +2098,7 @@
       "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"
@@ -2886,7 +2886,7 @@
     },
     "http-errors": {
       "version": "1.6.3",
-      "resolved": "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
       "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
       "requires": {
         "depd": "~1.1.2",
@@ -3716,9 +3716,9 @@
       "integrity": "sha1-ICtIAhoMTL3i34DeFaF0Q8i0OYA="
     },
     "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=="
     },
     "nodemon": {
       "version": "1.18.4",
diff --git a/back-end/package.json b/back-end/package.json
index 0b68ae1..8a75766 100644
--- a/back-end/package.json
+++ b/back-end/package.json
@@ -21,7 +21,7 @@
     "juice": "^4.3.1",
     "knex": "^0.13.0",
     "morgan": "~1.9.0",
-    "nodemailer": "^4.6.8",
+    "nodemailer": "^6.4.16",
     "nodemon": "^1.18.4",
     "npm": "^6.8.0",
     "pg": "^6.4.0",