diff --git a/package-lock.json b/package-lock.json
index b9d9c3672..0461bf7bc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,15 +10,6 @@
       "integrity": "sha512-gB1Oqypj/WbMjnWyCcvQdynRyfusKtqzUpt+EN/OtgFcjikC7ZV4qzS3SLbO1Ai2B0iVSgWvwR9A49lZGfivYg==",
       "dev": true
     },
-    "@types/buffer-from": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/@types/buffer-from/-/buffer-from-1.1.0.tgz",
-      "integrity": "sha512-BLFpLBcN+RPKUsFxqRkMiwqTOOdi+TrKr5OpLJ9qCnUdSxS6S80+QRX/mIhfR66u0Ykc4QTkReaejOM2ILh+9Q==",
-      "dev": true,
-      "requires": {
-        "@types/node": "*"
-      }
-    },
     "@types/chai": {
       "version": "4.0.10",
       "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.0.10.tgz",
@@ -170,7 +161,7 @@
       "dependencies": {
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -849,12 +840,6 @@
         "abbrev": "1"
       }
     },
-    "ntypescript": {
-      "version": "1.201706190042.1",
-      "resolved": "https://registry.npmjs.org/ntypescript/-/ntypescript-1.201706190042.1.tgz",
-      "integrity": "sha1-hmrpzDZoixQWBhVu0LzDXN9TYnE=",
-      "dev": true
-    },
     "object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -1056,7 +1041,7 @@
     },
     "strip-ansi": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
       "requires": {
diff --git a/package.json b/package.json
index 1df53c328..d3d5eac27 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,6 @@
   "homepage": "https://github.com/TypeStrong/ts-node",
   "devDependencies": {
     "@types/arrify": "^1.0.1",
-    "@types/buffer-from": "^1.1.0",
     "@types/chai": "^4.0.4",
     "@types/diff": "^3.2.1",
     "@types/minimist": "^1.2.0",
@@ -77,7 +76,6 @@
   },
   "dependencies": {
     "arrify": "^1.0.0",
-    "buffer-from": "^1.1.0",
     "diff": "^3.1.0",
     "make-error": "^1.1.1",
     "minimist": "^1.2.0",
diff --git a/src/index.ts b/src/index.ts
index 42fcd9a42..b72e65321 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -6,7 +6,6 @@ import mkdirp = require('mkdirp')
 import crypto = require('crypto')
 import yn = require('yn')
 import arrify = require('arrify')
-import bufferFrom = require('buffer-from')
 import { BaseError } from 'make-error'
 import * as util from 'util'
 import * as ts from 'typescript'
@@ -487,7 +486,7 @@ type SourceOutput = [string, string]
  * Update the output remapping the source map.
  */
 function updateOutput (outputText: string, fileName: string, sourceMap: string, getExtension: (fileName: string) => string) {
-  const base64Map = bufferFrom(updateSourceMap(sourceMap, fileName), 'utf8').toString('base64')
+  const base64Map = Buffer.from(updateSourceMap(sourceMap, fileName), 'utf8').toString('base64')
   const sourceMapContent = `data:application/json;charset=utf-8;base64,${base64Map}`
   const sourceMapLength = `${basename(fileName)}.map`.length + (getExtension(fileName).length - extname(fileName).length)