diff --git a/lib/App/index.js b/lib/App/index.js
index <HASH>..<HASH> 100644
--- a/lib/App/index.js
+++ b/lib/App/index.js
@@ -29,9 +29,9 @@ const VALIDATION_LEVELS = [
   'publish',
 ];
 const IMAGE_MARKERS = {
-  '.jpg': new Buffer([ 0xFF, 0xD8 ]),
-  '.jpeg': new Buffer([ 0xFF, 0xD8 ]),
-  '.png': new Buffer([ 0x89, 0x50, 0x4e, 0x47 ]),
+  '.jpg': Buffer.from([ 0xFF, 0xD8 ]),
+  '.jpeg': Buffer.from([ 0xFF, 0xD8 ]),
+  '.png': Buffer.from([ 0x89, 0x50, 0x4e, 0x47 ]),
 }
 const IMAGE_SIZES = {
   'app': {
@@ -554,7 +554,7 @@ class App {
     filepath = join( this._path, filepath );
 
     const fd = await openAsync(filepath, 'r');
-    const buffer = new Buffer(numBytes);
+    const buffer = Buffer.from(numBytes);
     await readAsync(fd, buffer, 0, numBytes, 0);
     return buffer;
   }
new Buffer -> Buffer.from