diff --git a/.babelrc b/.babelrc
new file mode 100644
index 0000000..e578e78
--- /dev/null
+++ b/.babelrc
@@ -0,0 +1,3 @@
+{
+  "presets": [["env", {"targets": {"node": "4.0"}}]]
+}
diff --git a/distributions/cli.js b/distributions/cli.js
index d1109df..5a5a699 100755
--- a/distributions/cli.js
+++ b/distributions/cli.js
@@ -1,13 +1,13 @@
 #!/usr/bin/env node
 'use strict';
 
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
 var _index = require('./index');
 
 var _index2 = _interopRequireDefault(_index);
 
-var reporter = (0, _index2['default'])();
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var reporter = (0, _index2.default)();
 
 process.stdin.pipe(reporter).pipe(process.stdout);
 
diff --git a/distributions/index.js b/distributions/index.js
index f01ff59..c13ba63 100644
--- a/distributions/index.js
+++ b/distributions/index.js
@@ -1,11 +1,9 @@
 'use strict';
 
-Object.defineProperty(exports, '__esModule', {
+Object.defineProperty(exports, "__esModule", {
   value: true
 });
 
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
 var _diff = require('diff');
 
 var _chalk = require('chalk');
@@ -20,9 +18,9 @@ var _figures = require('figures');
 
 var _figures2 = _interopRequireDefault(_figures);
 
-var _through2 = require('through2');
+var _through = require('through2');
 
-var _through22 = _interopRequireDefault(_through2);
+var _through2 = _interopRequireDefault(_through);
 
 var _tapParser = require('tap-parser');
 
@@ -36,19 +34,21 @@ var _jsondiffpatch = require('jsondiffpatch');
 
 var _jsondiffpatch2 = _interopRequireDefault(_jsondiffpatch);
 
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
 var INDENT = '  ';
-var FIG_TICK = _figures2['default'].tick;
-var FIG_CROSS = _figures2['default'].cross;
+var FIG_TICK = _figures2.default.tick;
+var FIG_CROSS = _figures2.default.cross;
 
 var createReporter = function createReporter() {
-  var output = (0, _through22['default'])();
-  var p = (0, _tapParser2['default'])();
-  var stream = (0, _duplexer2['default'])(p, output);
+  var output = (0, _through2.default)();
+  var p = new _tapParser2.default();
+  var stream = (0, _duplexer2.default)(p, output);
   var startedAt = Date.now();
 
   var println = function println() {
-    var input = arguments.length <= 0 || arguments[0] === undefined ? '' : arguments[0];
-    var indentLevel = arguments.length <= 1 || arguments[1] === undefined ? 0 : arguments[1];
+    var input = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
+    var indentLevel = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
 
     var indent = '';
 
@@ -57,20 +57,20 @@ var createReporter = function createReporter() {
     }
 
     input.split('\n').forEach(function (line) {
-      output.push('' + indent + line);
+      output.push(`${indent}${line}`);
       output.push('\n');
     });
   };
 
   var handleTest = function handleTest(name) {
     println();
-    println(_chalk2['default'].blue(name), 1);
+    println(_chalk2.default.blue(name), 1);
   };
 
   var handleAssertSuccess = function handleAssertSuccess(assert) {
     var name = assert.name;
 
-    println(_chalk2['default'].green(FIG_TICK) + '  ' + _chalk2['default'].dim(name), 2);
+    println(`${_chalk2.default.green(FIG_TICK)}  ${_chalk2.default.dim(name)}`, 2);
   };
 
   var toString = function toString(arg) {
@@ -93,14 +93,14 @@ var createReporter = function createReporter() {
     var name = assert.name;
 
     var writeDiff = function writeDiff(_ref) {
-      var value = _ref.value;
-      var added = _ref.added;
-      var removed = _ref.removed;
+      var value = _ref.value,
+          added = _ref.added,
+          removed = _ref.removed;
 
-      var style = _chalk2['default'].white;
+      var style = _chalk2.default.white;
 
-      if (added) style = _chalk2['default'].green.inverse;
-      if (removed) style = _chalk2['default'].red.inverse;
+      if (added) style = _chalk2.default.green.inverse;
+      if (removed) style = _chalk2.default.red.inverse;
 
       // only highlight values and not spaces before
       return value.replace(/(^\s*)(.*)/g, function (m, one, two) {
@@ -108,10 +108,11 @@ var createReporter = function createReporter() {
       });
     };
 
-    var _assert$diag = assert.diag;
-    var at = _assert$diag.at;
-    var actual = _assert$diag.actual;
-    var expected = _assert$diag.expected;
+    var _assert$diag = assert.diag,
+        at = _assert$diag.at,
+        actual = _assert$diag.actual,
+        expected = _assert$diag.expected;
+
 
     var expected_type = toString(expected);
 
@@ -125,8 +126,8 @@ var createReporter = function createReporter() {
         }
       } catch (e) {
         try {
-          actual = JSON.stringify(eval('(' + actual + ')'), null, 2);
-          expected = JSON.stringify(eval('(' + expected + ')'), null, 2);
+          actual = JSON.stringify(eval(`(${actual})`), null, 2);
+          expected = JSON.stringify(eval(`(${expected})`), null, 2);
         } catch (e) {
           // do nothing because it wasn't a valid json object
         }
@@ -135,11 +136,11 @@ var createReporter = function createReporter() {
       expected_type = toString(expected);
     }
 
-    println(_chalk2['default'].red(FIG_CROSS) + '  ' + _chalk2['default'].red(name) + ' at ' + _chalk2['default'].magenta(at), 2);
+    println(`${_chalk2.default.red(FIG_CROSS)}  ${_chalk2.default.red(name)} at ${_chalk2.default.magenta(at)}`, 2);
 
     if (expected_type === 'object') {
-      var delta = _jsondiffpatch2['default'].diff(actual[failed_test_number], expected[failed_test_number]);
-      var _output = _jsondiffpatch2['default'].formatters.console.format(delta);
+      var delta = _jsondiffpatch2.default.diff(actual[failed_test_number], expected[failed_test_number]);
+      var _output = _jsondiffpatch2.default.formatters.console.format(delta);
       println(_output, 4);
     } else if (expected_type === 'array') {
       var compared = (0, _diff.diffJson)(actual, expected).map(writeDiff).join('');
@@ -148,11 +149,11 @@ var createReporter = function createReporter() {
     } else if (expected === 'undefined' && actual === 'undefined') {
       ;
     } else if (expected_type === 'string') {
-      var compared = (0, _diff.diffWords)(actual, expected).map(writeDiff).join('');
+      var _compared = (0, _diff.diffWords)(actual, expected).map(writeDiff).join('');
 
-      println(compared, 4);
+      println(_compared, 4);
     } else {
-      println(_chalk2['default'].red.inverse(actual) + _chalk2['default'].green.inverse(expected), 4);
+      println(_chalk2.default.red.inverse(actual) + _chalk2.default.green.inverse(expected), 4);
     }
   };
 
@@ -160,13 +161,13 @@ var createReporter = function createReporter() {
     var finishedAt = Date.now();
 
     println();
-    println(_chalk2['default'].green('passed: ' + result.pass + '  ') + _chalk2['default'].red('failed: ' + (result.fail || 0) + '  ') + _chalk2['default'].white('of ' + result.count + ' tests  ') + _chalk2['default'].dim('(' + (0, _prettyMs2['default'])(finishedAt - startedAt) + ')'));
+    println(_chalk2.default.green(`passed: ${result.pass}  `) + _chalk2.default.red(`failed: ${result.fail || 0}  `) + _chalk2.default.white(`of ${result.count} tests  `) + _chalk2.default.dim(`(${(0, _prettyMs2.default)(finishedAt - startedAt)})`));
     println();
 
     if (result.ok) {
-      println(_chalk2['default'].green('All of ' + result.count + ' tests passed!'));
+      println(_chalk2.default.green(`All of ${result.count} tests passed!`));
     } else {
-      println(_chalk2['default'].red((result.fail || 0) + ' of ' + result.count + ' tests failed.'));
+      println(_chalk2.default.red(`${result.fail || 0} of ${result.count} tests failed.`));
       stream.isFailed = true;
     }
 
@@ -197,11 +198,10 @@ var createReporter = function createReporter() {
   });
 
   p.on('extra', function (extra) {
-    println(_chalk2['default'].yellow(('' + extra).replace(/\n$/, '')), 4);
+    println(_chalk2.default.yellow(`${extra}`.replace(/\n$/, '')), 4);
   });
 
   return stream;
 };
 
-exports['default'] = createReporter;
-module.exports = exports['default'];
\ No newline at end of file
+exports.default = createReporter;
\ No newline at end of file
diff --git a/package.json b/package.json
index 4396ecf..c155a9c 100644
--- a/package.json
+++ b/package.json
@@ -13,17 +13,21 @@
   "author": "axross <kou@axross.org> (http://axross.me/)",
   "license": "MIT",
   "dependencies": {
-    "chalk": "^1.1.1",
-    "diff": "^2.2.1",
+    "chalk": "^2.3.2",
+    "diff": "^3.5.0",
     "duplexer": "^0.1.1",
-    "figures": "^1.4.0",
-    "jsondiffpatch": "^0.1.41",
-    "pretty-ms": "^2.1.0",
-    "tap-parser": "^1.2.2",
+    "figures": "^2.0.0",
+    "jsondiffpatch": "^0.3.8",
+    "pretty-ms": "^3.1.0",
+    "tap-parser": "^7.0.0",
     "through2": "^2.0.0"
   },
   "devDependencies": {
-    "babel": "^5.8.34"
+    "babel-cli": "^6.26.0",
+    "babel-preset-env": "^1.6.1"
+  },
+  "engines": {
+    "node": ">=4"
   },
   "repository": {
     "type": "git",
diff --git a/sources/index.js b/sources/index.js
index 6cf5c0c..ea79126 100644
--- a/sources/index.js
+++ b/sources/index.js
@@ -3,7 +3,7 @@ import chalk from 'chalk';
 import duplexer from 'duplexer';
 import figures from 'figures';
 import through2 from 'through2';
-import parser from 'tap-parser';
+import Parser from 'tap-parser';
 import prettyMs from 'pretty-ms';
 import jsondiffpatch from 'jsondiffpatch';
 
@@ -13,7 +13,7 @@ const FIG_CROSS = figures.cross;
 
 const createReporter = () => {
   const output = through2();
-  const p = parser();
+  const p = new Parser();
   const stream = duplexer(p, output);
   const startedAt = Date.now();