diff --git a/package.json b/package.json
index 602a5b201..976aae470 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,6 @@
         "https-proxy-agent": "5.0.1",
         "i18next": "21.10.0",
         "iconv-lite": "0.6.3",
-        "is-utf8": "0.2.1",
         "js-yaml": "4.1.0",
         "json-stringify-safe": "5.0.1",
         "jsonata": "2.0.5",
@@ -123,6 +122,6 @@
         "supertest": "6.3.3"
     },
     "engines": {
-        "node": ">=18.5"
+        "node": ">=18.14"
     }
 }
diff --git a/packages/node_modules/@node-red/nodes/core/function/90-exec.js b/packages/node_modules/@node-red/nodes/core/function/90-exec.js
index 70aec8d2b..aa864e1ab 100644
--- a/packages/node_modules/@node-red/nodes/core/function/90-exec.js
+++ b/packages/node_modules/@node-red/nodes/core/function/90-exec.js
@@ -19,7 +19,7 @@ module.exports = function(RED) {
     var spawn = require('child_process').spawn;
     var exec = require('child_process').exec;
     var fs = require('fs');
-    var isUtf8 = require('is-utf8');
+    const { isUtf8 } = require('node:buffer');
     const isWindows = process.platform === 'win32'
 
     function ExecNode(n) {
@@ -87,7 +87,7 @@ module.exports = function(RED) {
                     });
                     var cmd = arg.shift();
                     // Since 18.20.2/20.12.2, it is invalid to call spawn on Windows with a .bat/.cmd file
-                    // without using shell: true. 
+                    // without using shell: true.
                     const opts = isWindows ? { ...node.spawnOpt, shell: true } : node.spawnOpt
                     /* istanbul ignore else  */
                     node.debug(cmd+" ["+arg+"]");
diff --git a/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js b/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js
index 7be0263d6..cdb9a874d 100644
--- a/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js
+++ b/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js
@@ -18,7 +18,7 @@ module.exports = function(RED) {
     "use strict";
     const { getProxyForUrl } = require('./lib/proxyHelper');
     var mqtt = require("mqtt");
-    var isUtf8 = require('is-utf8');
+    const { isUtf8 } = require('node:buffer');
     var HttpsProxyAgent = require('https-proxy-agent');
     var url = require('url');
     const knownMediaTypes = {
diff --git a/packages/node_modules/@node-red/nodes/core/network/21-httpin.js b/packages/node_modules/@node-red/nodes/core/network/21-httpin.js
index 22e83b411..aee4f6f61 100644
--- a/packages/node_modules/@node-red/nodes/core/network/21-httpin.js
+++ b/packages/node_modules/@node-red/nodes/core/network/21-httpin.js
@@ -24,7 +24,7 @@ module.exports = function(RED) {
     var onHeaders = require('on-headers');
     var typer = require('content-type');
     var mediaTyper = require('media-typer');
-    var isUtf8 = require('is-utf8');
+    const { isUtf8 } = require('node:buffer');
     var hashSum = require("hash-sum");
 
     function rawBodyParser(req, res, next) {
diff --git a/packages/node_modules/@node-red/nodes/package.json b/packages/node_modules/@node-red/nodes/package.json
index f553c847c..8c8342471 100644
--- a/packages/node_modules/@node-red/nodes/package.json
+++ b/packages/node_modules/@node-red/nodes/package.json
@@ -32,7 +32,6 @@
         "hash-sum": "2.0.0",
         "hpagent": "1.2.0",
         "https-proxy-agent": "5.0.1",
-        "is-utf8": "0.2.1",
         "js-yaml": "4.1.0",
         "media-typer": "1.1.0",
         "mqtt": "5.7.0",
diff --git a/packages/node_modules/node-red/package.json b/packages/node_modules/node-red/package.json
index c77a71bce..baae27467 100644
--- a/packages/node_modules/node-red/package.json
+++ b/packages/node_modules/node-red/package.json
@@ -48,6 +48,6 @@
         "@node-rs/bcrypt": "1.10.4"
     },
     "engines": {
-        "node": ">=18.5"
+        "node": ">=18.14"
     }
 }