diff --git a/tests/TestCase.php b/tests/TestCase.php
index f3a0b10..d9ec66f 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -6,9 +6,9 @@
 use GuzzleHttp\Client;
 use GuzzleHttp\Handler\MockHandler;
 use GuzzleHttp\HandlerStack;
+use PHPUnit\Framework;
 
-
-abstract class TestCase extends \PHPUnit_Framework_TestCase {
+abstract class TestCase extends Framework\TestCase {
 
     /**
      * @param array $responses
diff --git a/tests/UtilsTest.php b/tests/UtilsTest.php
index c895145..3171ee1 100644
--- a/tests/UtilsTest.php
+++ b/tests/UtilsTest.php
@@ -2,10 +2,9 @@
 
 namespace Jahudka\FakturoidSDK\Tests;
 
-
-
 use Jahudka\FakturoidSDK\Utils;
 
+
 class UtilsTest extends TestCase {
 
     public function testToCamelCase() {