diff --git a/package-lock.json b/package-lock.json
index f9927bb..3e0f335 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1125,7 +1125,8 @@
     "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",
@@ -3344,9 +3345,9 @@
       }
     },
     "otp-generator": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/otp-generator/-/otp-generator-1.1.0.tgz",
-      "integrity": "sha1-WcTFVnV3Sjo1B19t7xuYajbX+K0="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/otp-generator/-/otp-generator-3.0.0.tgz",
+      "integrity": "sha512-InxKqHsAT7lvHmi9GEpw7S0feaEndIuWQaeRKGo71B2uPld6wzGvLdT55671xvYIsFO18c9Wplu1dxfM+ZbwdQ=="
     },
     "p-limit": {
       "version": "1.3.0",
@@ -3459,7 +3460,8 @@
     "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",
@@ -4265,6 +4267,7 @@
       "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 05a461a..5ac9c72 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "node-fetch": "^2.6.0",
     "node-forge": "^0.9.1",
     "nodemailer-sendgrid-transport": "^0.2.0",
-    "otp-generator": "^1.1.0",
+    "otp-generator": "^3.0.0",
     "random-number": "0.0.9",
     "redis": "^3.0.2",
     "request-promise": "^4.2.5",