diff --git a/tests/Bootstrap.php b/tests/Bootstrap.php
index 533c278..589745a 100644
--- a/tests/Bootstrap.php
+++ b/tests/Bootstrap.php
@@ -4,3 +4,7 @@ $dir = realpath(__DIR__);
 defined('BASE') OR define('BASE', dirname($dir) . '/');
 
 require_once BASE . 'parsecsv.lib.php';
+
+if (class_exists('PHPUnit_Framework_TestCase')) {
+    require_once __DIR__ . '/PHPUnit_Framework_TestCase.inc.php';
+}
diff --git a/tests/PHPUnit_Framework_TestCase.inc.php b/tests/PHPUnit_Framework_TestCase.inc.php
new file mode 100644
index 0000000..56babef
--- /dev/null
+++ b/tests/PHPUnit_Framework_TestCase.inc.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace PHPUnit\Framework;
+
+// Only needed to keep unit test code compatible with older PHPUnit versions
+
+/** @noinspection PhpUndefinedClassInspection */
+/** @noinspection AutoloadingIssuesInspection */
+class TestCase extends \PHPUnit_Framework_TestCase {
+
+}
diff --git a/tests/methods/construct_test.php b/tests/methods/construct_test.php
index 1a9a09a..2d5fcde 100644
--- a/tests/methods/construct_test.php
+++ b/tests/methods/construct_test.php
@@ -1,6 +1,6 @@
 <?php
 
-class construct_methods_Test extends PHPUnit_Framework_TestCase {
+class construct_methods_Test extends PHPUnit\Framework\TestCase {
 
     /**
      * CSV
diff --git a/tests/methods/parse_test.php b/tests/methods/parse_test.php
index 8946a22..331bcd9 100644
--- a/tests/methods/parse_test.php
+++ b/tests/methods/parse_test.php
@@ -1,6 +1,6 @@
 <?php
 
-class parse_test extends PHPUnit_Framework_TestCase {
+class parse_test extends PHPUnit\Framework\TestCase {
 
     /**
      * CSV
diff --git a/tests/properties/default_values_test.php b/tests/properties/default_values_test.php
index 631350a..6f4fe23 100644
--- a/tests/properties/default_values_test.php
+++ b/tests/properties/default_values_test.php
@@ -1,6 +1,6 @@
 <?php
 
-class default_values_properties_Test extends PHPUnit_Framework_TestCase {
+class default_values_properties_Test extends PHPUnit\Framework\TestCase {
     /**
      * CSV
      * The parseCSV object
diff --git a/tests/properties/worthless_test.php b/tests/properties/worthless_test.php
index 5491c8c..dd259f3 100644
--- a/tests/properties/worthless_test.php
+++ b/tests/properties/worthless_test.php
@@ -1,6 +1,6 @@
 <?php
 
-class worthless_properties_Test extends PHPUnit_Framework_TestCase {
+class worthless_properties_Test extends PHPUnit\Framework\TestCase {
     /**
      * CSV
      * The parseCSV object