diff --git a/nodes/core/core/75-exec.js b/nodes/core/core/75-exec.js
index 53a3d3c48..ef4f7037a 100644
--- a/nodes/core/core/75-exec.js
+++ b/nodes/core/core/75-exec.js
@@ -86,7 +86,7 @@ module.exports = function(RED) {
                     child.stderr.on('data', function (data) {
                         if (node.activeProcesses.hasOwnProperty(child.pid) && node.activeProcesses[child.pid] !== null) {
                             if (isUtf8(data)) { msg.payload = data.toString(); }
-                            else { msg.payload = new Buffer(data); }
+                            else { msg.payload = new Buffer.from(data); }
                             node.send([null,RED.util.cloneMessage(msg),null]);
                         }
                     });
@@ -121,7 +121,7 @@ module.exports = function(RED) {
                     /* istanbul ignore else  */
                     if (RED.settings.verbose) { node.log(cl); }
                     child = exec(cl, {encoding: 'binary', maxBuffer:10000000}, function (error, stdout, stderr) {
-                        msg.payload = new Buffer(stdout,"binary");
+                        msg.payload = new Buffer.from(stdout,"binary");
                         if (isUtf8(msg.payload)) { msg.payload = msg.payload.toString(); }
                         var msg2 = null;
                         if (stderr) {
diff --git a/nodes/core/io/31-tcpin.js b/nodes/core/io/31-tcpin.js
index 4f836c30f..531e7b43d 100644
--- a/nodes/core/io/31-tcpin.js
+++ b/nodes/core/io/31-tcpin.js
@@ -47,7 +47,7 @@ module.exports = function(RED) {
                 node.status({fill:"grey",shape:"dot",text:"common.status.connecting"});
                 var id = (1+Math.random()*4294967295).toString(16);
                 client = net.connect(node.port, node.host, function() {
-                    buffer = (node.datatype == 'buffer')? new Buffer(0):"";
+                    buffer = (node.datatype == 'buffer') ? new Buffer.from(0) : "";
                     node.connected = true;
                     node.log(RED._("tcpin.status.connected",{host:node.host,port:node.port}));
                     node.status({fill:"green",shape:"dot",text:"common.status.connected"});
@@ -132,7 +132,7 @@ module.exports = function(RED) {
                 count++;
                 node.status({text:RED._("tcpin.status.connections",{count:count})});
 
-                var buffer = (node.datatype == 'buffer')? new Buffer(0):"";
+                var buffer = (node.datatype == 'buffer') ? new Buffer.from(0) : "";
                 socket.on('data', function (data) {
                     if (node.datatype != 'buffer') {
                         data = data.toString(node.datatype);
@@ -269,9 +269,9 @@ module.exports = function(RED) {
                     if (Buffer.isBuffer(msg.payload)) {
                         client.write(msg.payload);
                     } else if (typeof msg.payload === "string" && node.base64) {
-                        client.write(new Buffer(msg.payload,'base64'));
+                        client.write(new Buffer.from(msg.payload,'base64'));
                     } else {
-                        client.write(new Buffer(""+msg.payload));
+                        client.write(new Buffer.from(""+msg.payload));
                     }
                     if (node.doend === true) {
                         end = true;
@@ -296,9 +296,9 @@ module.exports = function(RED) {
                         if (Buffer.isBuffer(msg.payload)) {
                             client.write(msg.payload);
                         } else if (typeof msg.payload === "string" && node.base64) {
-                            client.write(new Buffer(msg.payload,'base64'));
+                            client.write(new Buffer.from(msg.payload,'base64'));
                         } else {
-                            client.write(new Buffer(""+msg.payload));
+                            client.write(new Buffer.from(""+msg.payload));
                         }
                     }
                 }
@@ -307,9 +307,9 @@ module.exports = function(RED) {
                         if (Buffer.isBuffer(msg.payload)) {
                             connectionPool[i].write(msg.payload);
                         } else if (typeof msg.payload === "string" && node.base64) {
-                            connectionPool[i].write(new Buffer(msg.payload,'base64'));
+                            connectionPool[i].write(new Buffer.from(msg.payload,'base64'));
                         } else {
-                            connectionPool[i].write(new Buffer(""+msg.payload));
+                            connectionPool[i].write(new Buffer.from(""+msg.payload));
                         }
                     }
                 }
@@ -346,9 +346,9 @@ module.exports = function(RED) {
                     if (Buffer.isBuffer(msg.payload)) {
                         buffer = msg.payload;
                     } else if (typeof msg.payload === "string" && node.base64) {
-                        buffer = new Buffer(msg.payload,'base64');
+                        buffer = new Buffer.from(msg.payload,'base64');
                     } else {
-                        buffer = new Buffer(""+msg.payload);
+                        buffer = new Buffer.from(""+msg.payload);
                     }
                     for (var i = 0; i < connectedSockets.length; i += 1) {
                         if (node.doend === true) { connectedSockets[i].end(buffer); }
@@ -431,10 +431,10 @@ module.exports = function(RED) {
             if (!clients[connection_id].connected) {
                 var buf;
                 if (this.out == "count") {
-                    if (this.splitc === 0) { buf = new Buffer(1); }
-                    else { buf = new Buffer(this.splitc); }
+                    if (this.splitc === 0) { buf = new Buffer.alloc(1); }
+                    else { buf = new Buffer.alloc(this.splitc); }
                 }
-                else { buf = new Buffer(65536); } // set it to 64k... hopefully big enough for most TCP packets.... but only hopefully
+                else { buf = new Buffer.alloc(65536); } // set it to 64k... hopefully big enough for most TCP packets.... but only hopefully
 
                 clients[connection_id].client = net.Socket();
                 if (socketTimeout !== null) { clients[connection_id].client.setTimeout(socketTimeout);}
@@ -484,7 +484,7 @@ module.exports = function(RED) {
                                         clients[connection_id].timeout = setTimeout(function () {
                                             if (clients[connection_id]) {
                                                 clients[connection_id].timeout = null;
-                                                clients[connection_id].msg.payload = new Buffer(i+1);
+                                                clients[connection_id].msg.payload = new Buffer.alloc(i+1);
                                                 buf.copy(clients[connection_id].msg.payload,0,0,i+1);
                                                 node.send(clients[connection_id].msg);
                                                 if (clients[connection_id].client) {
@@ -505,7 +505,7 @@ module.exports = function(RED) {
                                 i += 1;
                                 if ( i >= node.splitc) {
                                     if (clients[connection_id]) {
-                                        clients[connection_id].msg.payload = new Buffer(i);
+                                        clients[connection_id].msg.payload = new Buffer.alloc(i);
                                         buf.copy(clients[connection_id].msg.payload,0,0,i);
                                         node.send(clients[connection_id].msg);
                                         if (clients[connection_id].client) {
@@ -523,7 +523,7 @@ module.exports = function(RED) {
                                 i += 1;
                                 if (data[j] == node.splitc) {
                                     if (clients[connection_id]) {
-                                        clients[connection_id].msg.payload = new Buffer(i);
+                                        clients[connection_id].msg.payload = new Buffer.alloc(i);
                                         buf.copy(clients[connection_id].msg.payload,0,0,i);
                                         node.send(clients[connection_id].msg);
                                         if (clients[connection_id].client) {
diff --git a/nodes/core/io/32-udp.js b/nodes/core/io/32-udp.js
index 849a7e270..ab810ac4b 100644
--- a/nodes/core/io/32-udp.js
+++ b/nodes/core/io/32-udp.js
@@ -181,11 +181,11 @@ module.exports = function(RED) {
                 } else {
                     var message;
                     if (node.base64) {
-                        message = new Buffer(msg.payload, 'base64');
+                        message = new Buffer.from(msg.payload, 'base64');
                     } else if (msg.payload instanceof Buffer) {
                         message = msg.payload;
                     } else {
-                        message = new Buffer(""+msg.payload);
+                        message = new Buffer.from(""+msg.payload);
                     }
                     sock.send(message, 0, message.length, por, add, function(err, bytes) {
                         if (err) {
diff --git a/nodes/core/storage/50-file.js b/nodes/core/storage/50-file.js
index 10d5b10a6..987c39d06 100644
--- a/nodes/core/storage/50-file.js
+++ b/nodes/core/storage/50-file.js
@@ -55,7 +55,7 @@ module.exports = function(RED) {
                 if (typeof data === "boolean") { data = data.toString(); }
                 if (typeof data === "number") { data = data.toString(); }
                 if ((this.appendNewline) && (!Buffer.isBuffer(data))) { data += os.EOL; }
-                node.data.push(new Buffer(data));
+                node.data.push(new Buffer.from(data));
 
                 while (node.data.length > 0) {
                     if (this.overwriteFile === "true") {