diff --git a/.travis.yml b/.travis.yml
index 182647d..bbaf5b7 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,13 +3,6 @@ sudo: false
 
 matrix:
     include:
-        -   php: 5.6
-            env: MAGENTO_VERSION=^100.0
-        -   php: 5.6
-            env: MAGENTO_VERSION=^100.1
-
-        -   php: 7.0
-            env: MAGENTO_VERSION=^101.0
         -   php: 7.1
             env: MAGENTO_VERSION=^101.0
 
diff --git a/Test/.phpunit.result.cache b/Test/.phpunit.result.cache
new file mode 100644
index 0000000..f5c7811
--- /dev/null
+++ b/Test/.phpunit.result.cache
@@ -0,0 +1 @@
+C:37:"PHPUnit\Runner\DefaultTestResultCache":882:{a:2:{s:7:"defects";a:1:{s:97:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSources with data set #1";i:3;}s:5:"times";a:6:{s:97:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSources with data set #0";d:1.683;s:97:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSources with data set #1";d:1.505;s:97:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSources with data set #2";d:1.111;s:113:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSourcesWithSameCurrency with data set #0";d:1.002;s:113:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSourcesWithSameCurrency with data set #1";d:1.002;s:113:"OxCom\MagentoCurrencyServices\Test\Model\Currency\Import\SourceTest::testSourcesWithSameCurrency with data set #2";d:1.002;}}}
\ No newline at end of file
diff --git a/Test/Model/AbstractTestCase.php b/Test/Model/AbstractTestCase.php
index dfb0143..95b9beb 100755
--- a/Test/Model/AbstractTestCase.php
+++ b/Test/Model/AbstractTestCase.php
@@ -3,13 +3,14 @@
 namespace OxCom\MagentoCurrencyServices\Test\Model;
 
 use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use PHPUnit\Framework\TestCase;
 
 /**
  * Class AbstractTestCase
  *
  * @package OxCom\MagentoCurrencyServices\Test\Model
  */
-abstract class AbstractTestCase extends \PHPUnit\Framework\TestCase
+abstract class AbstractTestCase extends TestCase
 {
     /**
      * @var bool
@@ -32,12 +33,10 @@ public function __construct($name = null, array $data = [], $dataName = '')
         parent::__construct($name, $data, $dataName);
     }
 
-    /**
-     * Sets up the fixture, for example, open a network connection.
-     * This method is called before a test is executed.
-     */
-    protected function setUp()
+    public static function setUpBeforeClass(): void
     {
+        parent::setUpBeforeClass();
+
         // every week switch to real or mocked response to avoid loose of source
         $date           = new \DateTime();
         $week           = $date->format("W");
@@ -46,6 +45,15 @@ protected function setUp()
         if (static::$isReal) {
             \fwrite(STDOUT, "!!! Test will be executed on real sources !!!" . PHP_EOL . PHP_EOL);
         }
+    }
+
+    /**
+     * Sets up the fixture, for example, open a network connection.
+     * This method is called before a test is executed.
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
 
         $this->om = new ObjectManager($this);
     }
@@ -54,7 +62,7 @@ protected function setUp()
      * Tears down the fixture, for example, close a network connection.
      * This method is called after a test is executed.
      */
-    protected function tearDown()
+    protected function tearDown(): void
     {
         $this->om = null;
     }
diff --git a/Test/phpunit.xml b/Test/phpunit.xml
index c9b03ec..104d1fc 100644
--- a/Test/phpunit.xml
+++ b/Test/phpunit.xml
@@ -1,29 +1,26 @@
 <?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"
-        backupGlobals="false"
-        stderr="true"
-        bootstrap="bootstrap.php"
-        convertErrorsToExceptions="true"
-        convertNoticesToExceptions="true"
-        convertWarningsToExceptions="true"
-        colors="true">
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         backupGlobals="false"
+         stderr="true"
+         bootstrap="bootstrap.php"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         colors="true">
+    <coverage>
+        <include>
+            <directory>../Model</directory>
+        </include>
+        <report>
+            <clover outputFile="../coverage/clover.xml"/>
+            <html outputDirectory="../coverage" lowUpperBound="35" highLowerBound="70"/>
+        </report>
+    </coverage>
     <testsuites>
         <testsuite name="CurrencyServices">
             <directory suffix="Test.php">Model</directory>
         </testsuite>
     </testsuites>
-    <filter>
-        <whitelist>
-            <directory>../Model</directory>
-        </whitelist>
-    </filter>
-    <logging>
-        <log type="coverage-html"
-             target="../coverage"
-             lowUpperBound="35"
-             highLowerBound="70"/>
-        <log type="coverage-clover" target="../coverage/clover.xml"/>
-    </logging>
+    <logging/>
 </phpunit>