diff --git a/lib/main.js b/lib/main.js
index e1b5677..573e056 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -517,7 +517,7 @@ function coerceToBase64(thing, name) {
 
     // ArrayBuffer to Buffer
     if (thing instanceof ArrayBuffer && !(thing instanceof Buffer)) {
-        thing = new Buffer(thing);
+        thing = new Buffer.from(thing);
     }
 
     // Buffer to base64 string