diff --git a/exercises/buffer_from_string/solution/solution.js b/exercises/buffer_from_string/solution/solution.js
index d9f7d90..6df77da 100644
--- a/exercises/buffer_from_string/solution/solution.js
+++ b/exercises/buffer_from_string/solution/solution.js
@@ -1 +1 @@
-console.log(new Buffer('bytewiser'))
+console.log(Buffer.from('bytewiser'))
diff --git a/exercises/hexadecimal_encoding/solution/solution.js b/exercises/hexadecimal_encoding/solution/solution.js
index d09ed19..8714268 100644
--- a/exercises/hexadecimal_encoding/solution/solution.js
+++ b/exercises/hexadecimal_encoding/solution/solution.js
@@ -1,2 +1,2 @@
 var bytes = process.argv.slice(2).map(Number)
-console.log(new Buffer(bytes).toString('hex'))
+console.log(Buffer.from(bytes).toString('hex'))