diff --git a/composer.json b/composer.json
index 97f7641..9490f69 100644
--- a/composer.json
+++ b/composer.json
@@ -19,9 +19,10 @@
         }
     },
     "require": {
-        "php-vcr/php-vcr": "^1.4"
+        "php-vcr/php-vcr": "^1.4",
+        "php": "^7.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7"
+        "phpunit/phpunit": "^7.0"
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index b78b5db..56a2491 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/7.0/phpunit.xsd"
          backupGlobals="false"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
@@ -10,7 +10,6 @@
          bootstrap="tests/bootstrap.php"
          cacheTokens="true"
          forceCoversAnnotation="false"
-         mapTestClassNameToCoveredClassName="false"
          printerClass="PHPUnit\TextUI\ResultPrinter"
          processIsolation="false"
          stopOnError="false"
@@ -18,7 +17,6 @@
          stopOnIncomplete="false"
          stopOnSkipped="false"
          testSuiteLoaderClass="PHPUnit\Runner\StandardTestSuiteLoader"
-         strict="false"
          verbose="true"
 >
 
@@ -29,9 +27,6 @@
     </testsuites>
 
     <filter>
-        <blacklist>
-            <directory>./vendor</directory>
-        </blacklist>
         <whitelist processUncoveredFilesFromWhitelist="true">
             <directory suffix=".php">src</directory>
         </whitelist>
diff --git a/src/VCRTestListener.php b/src/VCRTestListener.php
index 1f0df1a..efc87d4 100644
--- a/src/VCRTestListener.php
+++ b/src/VCRTestListener.php
@@ -1,9 +1,11 @@
 <?php
+declare(strict_types=1);
 
 namespace VCR\PHPUnit\TestListener;
 
 use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\Test;
+use PHPUnit\Framework\TestCase;
 use PHPUnit\Framework\TestListener;
 use PHPUnit\Framework\TestSuite;
 use PHPUnit\Framework\Warning;
@@ -15,124 +17,21 @@
  * Here is an example XML configuration for activating this listener:
  *
  * <code>
- * <listeners>
- *   <listener class="VCR\PHPUnit\TestListener\VCRTestListener" file="vendor/php-vcr/phpunit-testlistener-vcr/src/VCRTestListener.php" />
- * </listeners>
+ *   <listeners>
+ *     <listener class="VCR\PHPUnit\TestListener\VCRTestListener" file="vendor/php-vcr/phpunit-testlistener-vcr/src/VCRTestListener.php" />
+ *   </listeners>
  * </code>
  *
- * @author    Adrian Philipp <mail@adrian-philipp.com>
+ * @author    Adrian Philipp  <mail@adrian-philipp.com>
  * @author    Davide Borsatto <davide.borsatto@gmail.com>
- * @copyright 2011-2017 Adrian Philipp <mail@adrian-philipp.com>
- * @license   http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
- *
- * @version   Release: @package_version@
- *
- * @see       http://www.phpunit.de/
+ * @author    Renato Mefi     <gh@mefi.in>
  */
-class VCRTestListener implements TestListener
+final class VCRTestListener implements TestListener
 {
-    /**
-     * @var array
-     */
-    protected $runs = array();
-
-    /**
-     * @var array
-     */
-    protected $options = array();
-
-    /**
-     * @var int
-     */
-    protected $suites = 0;
-
-    /**
-     * Constructor.
-     *
-     * @param array $options
-     */
-    public function __construct(array $options = array())
-    {
-    }
-
-    /**
-     * An error occurred.
-     *
-     * @param Test      $test
-     * @param Exception $e
-     * @param float     $time
-     */
-    public function addError(Test $test, \Throwable $t, float $time): void
-    {
-    }
-
-    /**
-     * A warning occurred.
-     *
-     * @param Test    $test
-     * @param Warning $e
-     * @param float   $time
-     *
-     * @since Method available since Release 5.1.0
-     */
-    public function addWarning(Test $test, Warning $e, float $time): void
-    {
-    }
-
-    /**
-     * A failure occurred.
-     *
-     * @param Test                 $test
-     * @param AssertionFailedError $e
-     * @param float                $time
-     */
-    public function addFailure(Test $test, AssertionFailedError $e, float $time): void
-    {
-    }
-
-    /**
-     * Incomplete test.
-     *
-     * @param Test       $test
-     * @param \Exception $e
-     * @param float      $time
-     */
-    public function addIncompleteTest(Test $test, \Throwable $e, float $time): void
-    {
-    }
-
-    /**
-     * Skipped test.
-     *
-     * @param Test       $test
-     * @param \Exception $e
-     * @param float      $time
-     */
-    public function addSkippedTest(Test $test, \Throwable $e, float $time): void
-    {
-    }
-
-    /**
-     * Risky test.
-     *
-     * @param Test       $test
-     * @param \Exception $e
-     * @param float      $time
-     */
-    public function addRiskyTest(Test $test, \Throwable $e, float $time): void
-    {
-    }
-
-    /**
-     * A test started.
-     *
-     * @param Test $test
-     *
-     * @return bool|null
-     */
     public function startTest(Test $test): void
     {
-        $class = get_class($test);
+        $class = \get_class($test);
+        \assert($test instanceof TestCase);
         $method = $test->getName(false);
 
         if (!method_exists($class, $method)) {
@@ -147,7 +46,7 @@ public function startTest(Test $test): void
         $cassetteName = array_pop($parsed);
 
         // If the cassette name ends in .json, then use the JSON storage format
-        if (substr($cassetteName, '-5') == '.json') {
+        if (substr($cassetteName, -5) === '.json') {
             VCR::configure()->setStorage('json');
         }
 
@@ -159,9 +58,9 @@ public function startTest(Test $test): void
         VCR::insertCassette($cassetteName);
     }
 
-    private static function parseDocBlock($docBlock, $tag)
+    private static function parseDocBlock($docBlock, $tag): array
     {
-        $matches = array();
+        $matches = [];
 
         if (empty($docBlock)) {
             return $matches;
@@ -185,31 +84,39 @@ private static function parseDocBlock($docBlock, $tag)
         return $matches;
     }
 
-    /**
-     * A test ended.
-     *
-     * @param Test  $test
-     * @param float $time
-     */
     public function endTest(Test $test, float $time): void
     {
         VCR::turnOff();
     }
 
-    /**
-     * A test suite started.
-     *
-     * @param TestSuite $suite
-     */
+    public function addError(Test $test, \Throwable $t, float $time): void
+    {
+    }
+
+    public function addWarning(Test $test, Warning $e, float $time): void
+    {
+    }
+
+    public function addFailure(Test $test, AssertionFailedError $e, float $time): void
+    {
+    }
+
+    public function addIncompleteTest(Test $test, \Throwable $e, float $time): void
+    {
+    }
+
+    public function addSkippedTest(Test $test, \Throwable $e, float $time): void
+    {
+    }
+
+    public function addRiskyTest(Test $test, \Throwable $e, float $time): void
+    {
+    }
+
     public function startTestSuite(TestSuite $suite): void
     {
     }
 
-    /**
-     * A test suite ended.
-     *
-     * @param TestSuite $suite
-     */
     public function endTestSuite(TestSuite $suite): void
     {
     }
diff --git a/tests/VCRTestListenerTest.php b/tests/VCRTestListenerTest.php
index db68b73..c2608f9 100644
--- a/tests/VCRTestListenerTest.php
+++ b/tests/VCRTestListenerTest.php
@@ -1,18 +1,16 @@
 <?php
+declare(strict_types=1);
 
 namespace Tests\VCR\PHPUnit\TestListener;
 
 use PHPUnit\Framework\TestCase;
 
-/**
- * Test integration of PHPVCR with PHPUnit using annotations.
- */
-class VCRTestListenerTest extends TestCase
+final class VCRTestListenerTest extends TestCase
 {
     /**
      * @vcr unittest_annotation_test
      */
-    public function testInterceptsWithAnnotations()
+    public function testInterceptsWithAnnotations(): void
     {
         // Content of tests/fixtures/unittest_annotation_test: "This is a annotation test dummy".
         $result = file_get_contents('http://google.com');
@@ -22,7 +20,7 @@ public function testInterceptsWithAnnotations()
     /**
      * @vcr unittest_annotation_test.yml
      */
-    public function testInterceptsWithAnnotationsAndFileExtension()
+    public function testInterceptsWithAnnotationsAndFileExtension(): void
     {
         $result = file_get_contents('http://google.com');
         $this->assertEquals('This is a annotation test dummy.', $result, 'Call was not intercepted (using annotations).');
@@ -30,20 +28,23 @@ public function testInterceptsWithAnnotationsAndFileExtension()
 
     /**
      * @vcr unittest_annotation_test
-     * @dataProvider aDataProvider
+     *
+     * @dataProvider dummyDataProvider
      */
-    public function testInterceptsWithAnnotationsWhenUsingDataProvider($dummyValue)
+    public function testInterceptsWithAnnotationsWhenUsingDataProvider(int $dummyValue): void
     {
         // Content of tests/fixtures/unittest_annotation_test: "This is an annotation test dummy".
         $result = file_get_contents('http://google.com');
+        // Just to avoid the dummy to annoy the static analyzers
+        \assert(\is_int($dummyValue));
         $this->assertEquals('This is a annotation test dummy.', $result, 'Call was not intercepted (using annotations with data provider).');
     }
 
-    public function aDataProvider()
+    public function dummyDataProvider(): array
     {
-        return array(
-            array(1),
-            array(2),
-        );
+        return [
+            [1],
+            [2],
+        ];
     }
 }