diff --git a/.travis.yml b/.travis.yml
index a78e23d..b18bae5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,5 @@
 sudo: false
 language: node_js
 node_js:
-  - '5'
+  - '6'
   - '4'
-  - '0.12'
-  - '0.10'
diff --git a/package.json b/package.json
index 96b5edd..32a00cc 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   ],
   "dependencies": {
     "chalk": "^1.0.0",
-    "npm-run-path": "^1.0.0",
+    "npm-run-path": "^2.0.0",
     "object-assign": "^4.0.0"
   },
   "devDependencies": {
diff --git a/tasks/shell.js b/tasks/shell.js
index 99e0a49..cc2c222 100644
--- a/tasks/shell.js
+++ b/tasks/shell.js
@@ -2,7 +2,6 @@
 var exec = require('child_process').exec;
 var chalk = require('chalk');
 var npmRunPath = require('npm-run-path');
-var objectAssign = require('object-assign');
 
 module.exports = function (grunt) {
 	grunt.registerMultiTask('shell', 'Run shell commands', function () {
@@ -28,8 +27,7 @@ module.exports = function (grunt) {
 		cmd = grunt.template.process(typeof cmd === 'function' ? cmd.apply(grunt, arguments) : cmd);
 
 		if (opts.preferLocal === true) {
-			opts.execOptions.env = opts.execOptions.env || objectAssign({}, process.env);
-			opts.execOptions.env.PATH = npmRunPath({path: opts.execOptions.env.PATH});
+			opts.execOptions.env = npmRunPath.env({env: opts.execOptions.env || process.env});
 		}
 
 		var cp = exec(cmd, opts.execOptions, function (err, stdout, stderr) {