diff --git a/jsfmt.js b/jsfmt.js
index b9c145e..e3ede72 100644
--- a/jsfmt.js
+++ b/jsfmt.js
@@ -4,7 +4,7 @@ var stdin = require('get-stdin');
 var jsfmt = require('jsfmt');
 var extend = require('extend');
 
-stdin().then(function(data) {
+stdin(function(data) {
     var scope = process.argv[3];
     var conf = jsfmt.getConfig();
     var optsJSON = extend({}, conf, JSON.parse(process.argv[4]));
diff --git a/node_modules/get-stdin/index.js b/node_modules/get-stdin/index.js
index 2083294..0f1aeb3 100644
--- a/node_modules/get-stdin/index.js
+++ b/node_modules/get-stdin/index.js
@@ -1,52 +1,49 @@
 'use strict';
-var stdin = process.stdin;
 
-module.exports = function () {
+module.exports = function (cb) {
+	var stdin = process.stdin;
 	var ret = '';
 
-	return new Promise(function (resolve) {
-		if (stdin.isTTY) {
-			resolve(ret);
-			return;
-		}
+	if (stdin.isTTY) {
+		setImmediate(cb, '');
+		return;
+	}
 
-		stdin.setEncoding('utf8');
+	stdin.setEncoding('utf8');
 
-		stdin.on('readable', function () {
-			var chunk;
+	stdin.on('readable', function () {
+		var chunk;
 
-			while ((chunk = stdin.read())) {
-				ret += chunk;
-			}
-		});
+		while (chunk = stdin.read()) {
+			ret += chunk;
+		}
+	});
 
-		stdin.on('end', function () {
-			resolve(ret);
-		});
+	stdin.on('end', function () {
+		cb(ret);
 	});
 };
 
-module.exports.buffer = function () {
+module.exports.buffer = function (cb) {
+	var stdin = process.stdin;
 	var ret = [];
 	var len = 0;
 
-	return new Promise(function (resolve) {
-		if (stdin.isTTY) {
-			resolve(new Buffer(''));
-			return;
-		}
+	if (stdin.isTTY) {
+		setImmediate(cb, new Buffer(''));
+		return;
+	}
 
-		stdin.on('readable', function () {
-			var chunk;
+	stdin.on('readable', function () {
+		var chunk;
 
-			while ((chunk = stdin.read())) {
-				ret.push(chunk);
-				len += chunk.length;
-			}
-		});
+		while (chunk = stdin.read()) {
+			ret.push(chunk);
+			len += chunk.length;
+		}
+	});
 
-		stdin.on('end', function () {
-			resolve(Buffer.concat(ret, len));
-		});
+	stdin.on('end', function () {
+		cb(Buffer.concat(ret, len));
 	});
 };
diff --git a/node_modules/get-stdin/license b/node_modules/get-stdin/license
deleted file mode 100644
index 654d0bf..0000000
--- a/node_modules/get-stdin/license
+++ /dev/null
@@ -1,21 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/node_modules/get-stdin/package.json b/node_modules/get-stdin/package.json
index 55badf1..f44b437 100644
--- a/node_modules/get-stdin/package.json
+++ b/node_modules/get-stdin/package.json
@@ -1,7 +1,7 @@
 {
   "name": "get-stdin",
-  "version": "5.0.0",
-  "description": "Get stdin as a string or buffer",
+  "version": "4.0.1",
+  "description": "Easier stdin",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -10,13 +10,13 @@
   "author": {
     "name": "Sindre Sorhus",
     "email": "sindresorhus@gmail.com",
-    "url": "sindresorhus.com"
+    "url": "http://sindresorhus.com"
   },
   "engines": {
-    "node": ">=0.12.0"
+    "node": ">=0.10.0"
   },
   "scripts": {
-    "test": "xo && ava test.js test-buffer.js && echo unicorns | ava test-real.js"
+    "test": "node test.js && node test-buffer.js && echo unicorns | node test-real.js"
   },
   "files": [
     "index.js"
@@ -29,38 +29,36 @@
     "buffer",
     "stream",
     "process",
-    "read"
+    "stream"
   ],
   "devDependencies": {
-    "ava": "*",
-    "buffer-equals": "^1.0.3",
-    "xo": "*"
+    "ava": "0.0.4",
+    "buffer-equal": "0.0.1"
   },
-  "gitHead": "3847c3da6c8c78b8edcc12dd41c8a754a92d664c",
+  "gitHead": "65c744975229b25d6cc5c7546f49b6ad9099553f",
   "bugs": {
     "url": "https://github.com/sindresorhus/get-stdin/issues"
   },
   "homepage": "https://github.com/sindresorhus/get-stdin",
-  "_id": "get-stdin@5.0.0",
-  "_shasum": "92ac421f64f6c12a1f9612c092fbd661989272d3",
-  "_from": "get-stdin@>=5.0.0 <6.0.0",
-  "_npmVersion": "2.11.3",
-  "_nodeVersion": "0.12.7",
+  "_id": "get-stdin@4.0.1",
+  "_shasum": "b968c6b0a04384324902e8bf1a5df32579a450fe",
+  "_from": "get-stdin@>=4.0.0 <5.0.0",
+  "_npmVersion": "1.4.28",
   "_npmUser": {
     "name": "sindresorhus",
     "email": "sindresorhus@gmail.com"
   },
-  "dist": {
-    "shasum": "92ac421f64f6c12a1f9612c092fbd661989272d3",
-    "tarball": "http://registry.npmjs.org/get-stdin/-/get-stdin-5.0.0.tgz"
-  },
   "maintainers": [
     {
       "name": "sindresorhus",
       "email": "sindresorhus@gmail.com"
     }
   ],
+  "dist": {
+    "shasum": "b968c6b0a04384324902e8bf1a5df32579a450fe",
+    "tarball": "http://registry.npmjs.org/get-stdin/-/get-stdin-4.0.1.tgz"
+  },
   "directories": {},
-  "_resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-5.0.0.tgz",
+  "_resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-4.0.1.tgz",
   "readme": "ERROR: No README data found!"
 }
diff --git a/node_modules/get-stdin/readme.md b/node_modules/get-stdin/readme.md
index 7b88ab9..bc1d32a 100644
--- a/node_modules/get-stdin/readme.md
+++ b/node_modules/get-stdin/readme.md
@@ -1,11 +1,11 @@
 # get-stdin [![Build Status](https://travis-ci.org/sindresorhus/get-stdin.svg?branch=master)](https://travis-ci.org/sindresorhus/get-stdin)
 
-> Get stdin as a string or buffer
+> Easier stdin
 
 
 ## Install
 
-```
+```sh
 $ npm install --save get-stdin
 ```
 
@@ -14,15 +14,15 @@ $ npm install --save get-stdin
 
 ```js
 // example.js
-const stdin = require('get-stdin');
+var stdin = require('get-stdin');
 
-stdin.then(x => {
-	console.log(x);
-	//=> 'unicorns'
+stdin(function (data) {
+	console.log(data);
+	//=> unicorns
 });
 ```
 
-```
+```sh
 $ echo unicorns | node example.js
 unicorns
 ```
@@ -30,18 +30,14 @@ unicorns
 
 ## API
 
-### stdin()
+### stdin(callback)
 
 Get `stdin` as a string.
 
-Returns a promise.
-
-### stdin.buffer()
+### stdin.buffer(callback)
 
 Get `stdin` as a buffer.
 
-Returns a promise.
-
 
 ## License
 
diff --git a/package.json b/package.json
index e243694..a707ad4 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "esformatter-quotes": "^1.0.3",
     "esformatter-semicolons": "^1.1.1",
     "extend": "^3.0.0",
-    "get-stdin": "^5.0.0",
+    "get-stdin": "^4.0.1",
     "jsfmt": "^0.5.0"
   },
   "engines": {