diff --git a/composer.json b/composer.json
index bbc84b1..1c79ef5 100755
--- a/composer.json
+++ b/composer.json
@@ -10,17 +10,20 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "php": ">= 5.5.9",
-        "vierbergenlars/php-semver": "3.0.*",
         "desarrolla2/cache": "2.1.*",
-        "monolog/monolog": "~1.21"
+        "monolog/monolog": "1.21.*",
+        "php": ">= 5.6.4",
+        "vierbergenlars/php-semver": "3.0.*"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.8.*"
+        "phpunit/phpunit": "6.1.*"
     },
     "autoload": {
         "psr-4": {
             "VisualAppeal\\": "src/"
         }
+    },
+    "config": {
+        "sort-packages": true
     }
 }
diff --git a/src/AutoUpdate.php b/src/AutoUpdate.php
index e2b0c3f..4349031 100755
--- a/src/AutoUpdate.php
+++ b/src/AutoUpdate.php
@@ -758,7 +758,7 @@ protected function _install($updateFile, $simulateInstall, $version)
                 }
             } else {
                 // touch will fail if PHP is not the owner of the file, and file_put_contents is faster than touch.
-                if (!file_put_contents($absoluteFilename)) {
+                if (file_put_contents($absoluteFilename, '') === false) {
                     $this->_log->addError(sprintf('[SIMULATE] The file "%s" could not be created!', $absoluteFilename));
                     zip_close($zip);
 
diff --git a/tests/AutoUpdateTest.php b/tests/AutoUpdateTest.php
index 4accfa5..45643cb 100755
--- a/tests/AutoUpdateTest.php
+++ b/tests/AutoUpdateTest.php
@@ -2,150 +2,154 @@
 
 require(__DIR__ . '/../vendor/autoload.php');
 
-use \VisualAppeal\AutoUpdate;
+use PHPUnit\Framework\TestCase;
+use VisualAppeal\AutoUpdate;
 
-class AutoUpdateTest extends PHPUnit_Framework_TestCase
+class AutoUpdateTest extends TestCase
 {
-	/**
-	 * AutoUpdate instance.
-	 *
-	 * @var \VisualAppeal\AutoUpdate
-	 */
-	private $_update = null;
-
-	/**
-	 * Setup the auto update
-	 */
-	protected function setUp()
-	{
-		$this->_update = new AutoUpdate(__DIR__ . DIRECTORY_SEPARATOR . 'temp', __DIR__ . DIRECTORY_SEPARATOR . 'install');
-		$this->_update->setCurrentVersion('0.1.0');
-		$this->_update->setUpdateUrl(__DIR__ . DIRECTORY_SEPARATOR . 'fixtures');
-		$this->_update->addLogHandler(new Monolog\Handler\StreamHandler(__DIR__ . DIRECTORY_SEPARATOR . 'temp' . DIRECTORY_SEPARATOR . 'update.log'));
-	}
-
-	protected function tearDown()
-	{
-		unset($this->_update);
-		$this->_update = null;
-	}
-
-	/**
-	 * Test creation of class instance.
-	 */
-	public function testInit()
-	{
-		$this->assertInstanceOf('\VisualAppeal\AutoUpdate', $this->_update);
-	}
-
-	/**
-	 * Test if errors get catched if no update file was found.
-	 */
-	public function testErrorUpdateCheck()
-	{
-		$this->_update->setUpdateFile('404.json');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertEquals(false, $response);
-		$this->assertFalse($this->_update->newVersionAvailable());
-		$this->assertEquals(0, count($this->_update->getVersionsToUpdate()));
-	}
-
-	/**
-	 * Test if new update is available with a json file.
-	 */
-	public function testJsonNewVersion()
-	{
-		$this->_update->setUpdateFile('updateAvailable.json');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertTrue($response);
-		$this->assertTrue($this->_update->newVersionAvailable());
-		$this->assertEquals('0.2.1', $this->_update->getLatestVersion());
-
-		$newVersions = $this->_update->getVersionsToUpdate();
-		$this->assertEquals(2, count($newVersions));
-		$this->assertEquals('0.2.0', $newVersions[0]);
-		$this->assertEquals('0.2.1', $newVersions[1]);
-	}
-
-	/**
-	 * Test if NO new update is available with a json file.
-	 */
-	public function testJsonNoNewVersion()
-	{
-		$this->_update->setUpdateFile('noUpdateAvailable.json');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertEquals(AutoUpdate::NO_UPDATE_AVAILABLE, $response);
-		$this->assertFalse($this->_update->newVersionAvailable());
-		$this->assertEquals(0, count($this->_update->getVersionsToUpdate()));
-	}
-
-	/**
-	 * Test if new update is available with a ini file.
-	 */
-	public function testIniNewVersion()
-	{
-		$this->_update->setUpdateFile('updateAvailable.ini');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertTrue($response);
-		$this->assertTrue($this->_update->newVersionAvailable());
-		$this->assertEquals('0.2.1', $this->_update->getLatestVersion());
-
-		$newVersions = $this->_update->getVersionsToUpdate();
-		$this->assertEquals(2, count($newVersions));
-		$this->assertEquals('0.2.0', $newVersions[0]);
-		$this->assertEquals('0.2.1', $newVersions[1]);
-	}
-
-	/**
-	 * Test if NO new update is available with a ini file.
-	 */
-	public function testIniNoNewVersion()
-	{
-		$this->_update->setUpdateFile('noUpdateAvailable.ini');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertEquals(AutoUpdate::NO_UPDATE_AVAILABLE, $response);
-		$this->assertFalse($this->_update->newVersionAvailable());
-		$this->assertEquals(0, count($this->_update->getVersionsToUpdate()));
-	}
-
-	/**
-	 * Ensure that a new dev version is available.
-	 */
-	public function testBranchDev()
-	{
-		$this->_update->setUpdateFile('updateAvailable.json');
-		$this->_update->setBranch('dev');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertTrue($response);
-	}
-
-	/**
-	 * Ensure that no new master version is available
-	 */
-	public function testBranchMaster()
-	{
-		$this->_update->setUpdateFile('noUpdateAvailable.json');
-		$this->_update->setBranch('master');
-		$response = $this->_update->checkUpdate();
-
-		$this->assertEquals(AutoUpdate::NO_UPDATE_AVAILABLE, $response);
-	}
-
-	/**
-	 * Test the trailing slash method.
-	 */
-	public function testTrailingSlashes()
-	{
-		$dir = DIRECTORY_SEPARATOR . 'test';
-		$this->assertEquals(DIRECTORY_SEPARATOR . 'test' . DIRECTORY_SEPARATOR, $this->_update->addTrailingSlash($dir));
-
-		$dir = DIRECTORY_SEPARATOR . 'test' . DIRECTORY_SEPARATOR;
-		$this->assertEquals(DIRECTORY_SEPARATOR . 'test' . DIRECTORY_SEPARATOR, $this->_update->addTrailingSlash($dir));
-	}
+    /**
+     * AutoUpdate instance.
+     *
+     * @var \VisualAppeal\AutoUpdate
+     */
+    private $_update = null;
+
+    /**
+     * Setup the auto update.
+     */
+    protected function setUp()
+    {
+        $this->_update = new AutoUpdate(__DIR__ . DIRECTORY_SEPARATOR . 'temp', __DIR__ . DIRECTORY_SEPARATOR . 'install');
+        $this->_update->setCurrentVersion('0.1.0');
+        $this->_update->setUpdateUrl(__DIR__ . DIRECTORY_SEPARATOR . 'fixtures');
+        $this->_update->addLogHandler(new Monolog\Handler\StreamHandler(__DIR__ . DIRECTORY_SEPARATOR . 'temp' . DIRECTORY_SEPARATOR . 'update.log'));
+    }
+
+    /**
+     * Unset the auto update.
+     */
+    protected function tearDown()
+    {
+        unset($this->_update);
+        $this->_update = null;
+    }
+
+    /**
+     * Test creation of class instance.
+     */
+    public function testInit()
+    {
+        $this->assertInstanceOf('\VisualAppeal\AutoUpdate', $this->_update);
+    }
+
+    /**
+     * Test if errors get catched if no update file was found.
+     */
+    public function testErrorUpdateCheck()
+    {
+        $this->_update->setUpdateFile('404.json');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertEquals(false, $response);
+        $this->assertFalse($this->_update->newVersionAvailable());
+        $this->assertEquals(0, count($this->_update->getVersionsToUpdate()));
+    }
+
+    /**
+     * Test if new update is available with a json file.
+     */
+    public function testJsonNewVersion()
+    {
+        $this->_update->setUpdateFile('updateAvailable.json');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertTrue($response);
+        $this->assertTrue($this->_update->newVersionAvailable());
+        $this->assertEquals('0.2.1', $this->_update->getLatestVersion());
+
+        $newVersions = $this->_update->getVersionsToUpdate();
+        $this->assertEquals(2, count($newVersions));
+        $this->assertEquals('0.2.0', $newVersions[0]);
+        $this->assertEquals('0.2.1', $newVersions[1]);
+    }
+
+    /**
+     * Test if NO new update is available with a json file.
+     */
+    public function testJsonNoNewVersion()
+    {
+        $this->_update->setUpdateFile('noUpdateAvailable.json');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertEquals(AutoUpdate::NO_UPDATE_AVAILABLE, $response);
+        $this->assertFalse($this->_update->newVersionAvailable());
+        $this->assertEquals(0, count($this->_update->getVersionsToUpdate()));
+    }
+
+    /**
+     * Test if new update is available with a ini file.
+     */
+    public function testIniNewVersion()
+    {
+        $this->_update->setUpdateFile('updateAvailable.ini');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertTrue($response);
+        $this->assertTrue($this->_update->newVersionAvailable());
+        $this->assertEquals('0.2.1', $this->_update->getLatestVersion());
+
+        $newVersions = $this->_update->getVersionsToUpdate();
+        $this->assertEquals(2, count($newVersions));
+        $this->assertEquals('0.2.0', $newVersions[0]);
+        $this->assertEquals('0.2.1', $newVersions[1]);
+    }
+
+    /**
+     * Test if NO new update is available with a ini file.
+     */
+    public function testIniNoNewVersion()
+    {
+        $this->_update->setUpdateFile('noUpdateAvailable.ini');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertEquals(AutoUpdate::NO_UPDATE_AVAILABLE, $response);
+        $this->assertFalse($this->_update->newVersionAvailable());
+        $this->assertEquals(0, count($this->_update->getVersionsToUpdate()));
+    }
+
+    /**
+     * Ensure that a new dev version is available.
+     */
+    public function testBranchDev()
+    {
+        $this->_update->setUpdateFile('updateAvailable.json');
+        $this->_update->setBranch('dev');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertTrue($response);
+    }
+
+    /**
+     * Ensure that no new master version is available
+     */
+    public function testBranchMaster()
+    {
+        $this->_update->setUpdateFile('noUpdateAvailable.json');
+        $this->_update->setBranch('master');
+        $response = $this->_update->checkUpdate();
+
+        $this->assertEquals(AutoUpdate::NO_UPDATE_AVAILABLE, $response);
+    }
+
+    /**
+     * Test the trailing slash method.
+     */
+    public function testTrailingSlashes()
+    {
+        $dir = DIRECTORY_SEPARATOR . 'test';
+        $this->assertEquals(DIRECTORY_SEPARATOR . 'test' . DIRECTORY_SEPARATOR, $this->_update->addTrailingSlash($dir));
+
+        $dir = DIRECTORY_SEPARATOR . 'test' . DIRECTORY_SEPARATOR;
+        $this->assertEquals(DIRECTORY_SEPARATOR . 'test' . DIRECTORY_SEPARATOR, $this->_update->addTrailingSlash($dir));
+    }
 }