diff --git a/composer.json b/composer.json
index 44a90be..148c343 100644
--- a/composer.json
+++ b/composer.json
@@ -20,10 +20,10 @@
     "pear/versioncontrol_git": "^0.5",
     "pear/pear-core-minimal": "^1.9",
     "pear/pear_exception": "^1.0",
-    "symfony/console": "^2.8|^3.0",
-    "symfony/filesystem": "^2.8|^3.0",
-    "symfony/process": "^2.8|^3.0",
-    "symfony/finder": "^2.8|^3.0"
+    "symfony/console": "^2.8|^3.0|^4.0",
+    "symfony/filesystem": "^2.8|^3.0|^4.0",
+    "symfony/process": "^2.8|^3.0|^4.0",
+    "symfony/finder": "^2.8|^3.0|^4.0"
   },
   "autoload": {
     "psr-4": {
diff --git a/tests/PhingCompareTest.php b/tests/PhingCompareTest.php
index bacd4f3..c83ff79 100644
--- a/tests/PhingCompareTest.php
+++ b/tests/PhingCompareTest.php
@@ -5,7 +5,7 @@
 use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Finder\SplFileInfo;
-use Symfony\Component\Process\ProcessBuilder;
+use Symfony\Component\Process\Process;
 
 class PhingCompareTest extends \PHPUnit_Framework_TestCase
 {
@@ -35,13 +35,8 @@ public static function tearDownAfterClass()
     public function testRunningPhing()
     {
         // Run phing compile
-        $builder = new ProcessBuilder();
-        $builder->setPrefix(__DIR__ . '/../vendor/bin/phing');
-        $builder->setWorkingDirectory(__DIR__ . '/../');
-        $builder->setArguments(array('compile'));
-
-        $process = $builder->getProcess();
-
+        $process = new Process(__DIR__ . '/../vendor/bin/phing compile');
+        $process->setWorkingDirectory(__DIR__ . '/../');
         $process->run();
 
         // Print this for keepsakes