diff --git a/package-lock.json b/package-lock.json
index d606e7a..40aaa28 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,7 +21,7 @@
         "mustache": "*",
         "mustache-express": "*",
         "nedb": "*",
-        "nodemailer": "*",
+        "nodemailer": "^6.9.9",
         "request": "^2.88.0",
         "serve-favicon": "^2.5.0",
         "supervisor": "*",
@@ -2356,9 +2356,9 @@
       }
     },
     "node_modules/nodemailer": {
-      "version": "6.6.3",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.6.3.tgz",
-      "integrity": "sha512-faZFufgTMrphYoDjvyVpbpJcYzwyFnbAMmQtj1lVBYAUSm3SOy2fIdd9+Mr4UxPosBa0JRw9bJoIwQn+nswiew==",
+      "version": "6.9.9",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.9.tgz",
+      "integrity": "sha512-dexTll8zqQoVJEZPwQAKzxxtFn0qTnjdQTchoU6Re9BUUGBJiOy3YMn/0ShTW6J5M0dfQ1NeDeRTTl4oIWgQMA==",
       "engines": {
         "node": ">=6.0.0"
       }
@@ -5540,9 +5540,9 @@
       }
     },
     "nodemailer": {
-      "version": "6.6.3",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.6.3.tgz",
-      "integrity": "sha512-faZFufgTMrphYoDjvyVpbpJcYzwyFnbAMmQtj1lVBYAUSm3SOy2fIdd9+Mr4UxPosBa0JRw9bJoIwQn+nswiew=="
+      "version": "6.9.9",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.9.tgz",
+      "integrity": "sha512-dexTll8zqQoVJEZPwQAKzxxtFn0qTnjdQTchoU6Re9BUUGBJiOy3YMn/0ShTW6J5M0dfQ1NeDeRTTl4oIWgQMA=="
     },
     "nopt": {
       "version": "4.0.3",
diff --git a/package.json b/package.json
index c28be4a..c9177df 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "mustache": "*",
     "mustache-express": "*",
     "nedb": "*",
-    "nodemailer": "*",
+    "nodemailer": "6.9.9",
     "request": "^2.88.0",
     "serve-favicon": "^2.5.0",
     "supervisor": "*",