diff --git a/JavaScript/1-singletrhead/package-lock.json b/JavaScript/1-singletrhead/package-lock.json
index 1bcca9a..4565d99 100644
--- a/JavaScript/1-singletrhead/package-lock.json
+++ b/JavaScript/1-singletrhead/package-lock.json
@@ -9,13 +9,13 @@
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
-        "nodemailer": "^6.1.1"
+        "nodemailer": "^6.6.1"
       }
     },
     "node_modules/nodemailer": {
-      "version": "6.4.17",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.17.tgz",
-      "integrity": "sha512-89ps+SBGpo0D4Bi5ZrxcrCiRFaMmkCt+gItMXQGzEtZVR3uAD3QAQIDoxTWnx3ky0Dwwy/dhFrQ+6NNGXpw/qQ==",
+      "version": "6.6.1",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.6.1.tgz",
+      "integrity": "sha512-1xzFN3gqv+/qJ6YRyxBxfTYstLNt0FCtZaFRvf4Sg9wxNGWbwFmGXVpfSi6ThGK6aRxAo+KjHtYSW8NvCsNSAg==",
       "engines": {
         "node": ">=6.0.0"
       }
@@ -23,9 +23,9 @@
   },
   "dependencies": {
     "nodemailer": {
-      "version": "6.4.17",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.17.tgz",
-      "integrity": "sha512-89ps+SBGpo0D4Bi5ZrxcrCiRFaMmkCt+gItMXQGzEtZVR3uAD3QAQIDoxTWnx3ky0Dwwy/dhFrQ+6NNGXpw/qQ=="
+      "version": "6.6.1",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.6.1.tgz",
+      "integrity": "sha512-1xzFN3gqv+/qJ6YRyxBxfTYstLNt0FCtZaFRvf4Sg9wxNGWbwFmGXVpfSi6ThGK6aRxAo+KjHtYSW8NvCsNSAg=="
     }
   }
 }
diff --git a/JavaScript/1-singletrhead/package.json b/JavaScript/1-singletrhead/package.json
index cb94f9c..f2d4e4d 100644
--- a/JavaScript/1-singletrhead/package.json
+++ b/JavaScript/1-singletrhead/package.json
@@ -14,6 +14,6 @@
   },
   "homepage": "https://github.com/HowProgrammingWorks/ActorModel#readme",
   "dependencies": {
-    "nodemailer": "^6.1.1"
+    "nodemailer": "^6.6.1"
   }
 }