diff --git a/composer.json b/composer.json
index f9f78b5..b86dc28 100644
--- a/composer.json
+++ b/composer.json
@@ -20,18 +20,16 @@
         }
     ],
     "require": {
+        "php": "^7.3 || ^8.0",
         "silverstripe/vendor-plugin": "^1",
-        "silverstripe/framework": "^4.2",
+        "silverstripe/framework": "^4.10",
         "silverstripe/cms": "^4.2",
         "silverstripe/reports": "^4.2",
         "silverstripe/siteconfig": "^4.2"
     },
     "require-dev": {
-        "sminnee/phpunit": "^5.7",
-        "squizlabs/php_codesniffer": "^3",
-        "silverstripe/behat-extension": "^3",
-        "silverstripe/serve": "^2",
-        "se/selenium-server-standalone": "2.41.0"
+        "silverstripe/recipe-testing": "^2",
+        "squizlabs/php_codesniffer": "^3"
     },
     "suggest": {
         "symbiote/silverstripe-queuedjobs": "Automatically schedules content review emails to be sent, only requiring one crontask to be created"
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 965f16a..7e35d22 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,7 +1,9 @@
 <phpunit bootstrap="vendor/silverstripe/cms/tests/bootstrap.php" colors="true">
-    <testsuite name="Default">
-        <directory>tests/php/</directory>
-    </testsuite>
+    <testsuites>
+        <testsuite name="Default">
+            <directory>tests/php/</directory>
+        </testsuite>
+    </testsuites>
     <filter>
         <whitelist addUncoveredFilesFromWhitelist="true">
             <directory suffix=".php">src/</directory>
diff --git a/src/Jobs/ContentReviewNotificationJob.php b/src/Jobs/ContentReviewNotificationJob.php
index 85d1d23..c04871a 100644
--- a/src/Jobs/ContentReviewNotificationJob.php
+++ b/src/Jobs/ContentReviewNotificationJob.php
@@ -80,7 +80,7 @@ class ContentReviewNotificationJob extends AbstractQueuedJob implements QueuedJo
         return QueuedJob::QUEUED;
     }
 
-    public function setup()
+    public function setUp()
     {
         parent::setup();
 
diff --git a/tests/php/ContentReviewBaseTest.php b/tests/php/ContentReviewBaseTest.php
index 8dcc48f..717c0d5 100644
--- a/tests/php/ContentReviewBaseTest.php
+++ b/tests/php/ContentReviewBaseTest.php
@@ -18,7 +18,7 @@ abstract class ContentReviewBaseTest extends FunctionalTest
      */
     protected $translatableEnabledBefore;
 
-    protected function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
@@ -39,7 +39,7 @@ abstract class ContentReviewBaseTest extends FunctionalTest
         }
     }
 
-    protected function tearDown()
+    protected function tearDown(): void
     {
         if (class_exists(Translatable::class)) {
             if ($this->translatableEnabledBefore) {
diff --git a/tests/php/ContentReviewCMSPageEditControllerTest.php b/tests/php/ContentReviewCMSPageEditControllerTest.php
index afcb051..5f5e048 100644
--- a/tests/php/ContentReviewCMSPageEditControllerTest.php
+++ b/tests/php/ContentReviewCMSPageEditControllerTest.php
@@ -17,9 +17,6 @@ use SilverStripe\Security\Group;
 use SilverStripe\Security\Member;
 use SilverStripe\SiteConfig\SiteConfig;
 
-/**
- * @mixin PHPUnit_Framework_TestCase
- */
 class ContentReviewCMSPageEditControllerTest extends ContentReviewBaseTest
 {
     /**
diff --git a/tests/php/ContentReviewNotificationTest.php b/tests/php/ContentReviewNotificationTest.php
index 019fa4a..d2e7aca 100644
--- a/tests/php/ContentReviewNotificationTest.php
+++ b/tests/php/ContentReviewNotificationTest.php
@@ -18,9 +18,6 @@ use SilverStripe\Security\Member;
 use SilverStripe\SiteConfig\SiteConfig;
 use SilverStripe\ContentReview\Models\ContentReviewLog;
 
-/**
- * @mixin PHPUnit_Framework_TestCase
- */
 class ContentReviewNotificationTest extends SapphireTest
 {
     /**
@@ -28,7 +25,7 @@ class ContentReviewNotificationTest extends SapphireTest
      */
     protected static $fixture_file = 'ContentReviewTest.yml';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
@@ -70,15 +67,15 @@ class ContentReviewNotificationTest extends SapphireTest
 
         $email = $this->findEmail($ToEmail, null, $Subject);
         $this->assertNotNull($email, "Email haven't been sent.");
-        $this->assertContains(
+        $this->assertStringContainsString(
             "<h1>$Subject</h1>".
             "<p>There are $PagesCount pages that are due for review today by you, $ToFirstName.</p>".
             "<p>This email was sent to $ToEmail</p>",
             $email['HtmlContent']
         );
-        $this->assertContains('Staff', $email['HtmlContent']);
-        $this->assertContains('Contact Us', $email['HtmlContent']);
-        $this->assertContains('Contact Us Child', $email['HtmlContent']);
+        $this->assertStringContainsString('Staff', $email['HtmlContent']);
+        $this->assertStringContainsString('Contact Us', $email['HtmlContent']);
+        $this->assertStringContainsString('Contact Us Child', $email['HtmlContent']);
 
         DBDatetime::clear_mock_now();
     }
diff --git a/tests/php/ContentReviewSettingsTest.php b/tests/php/ContentReviewSettingsTest.php
index f9b364a..1c35c50 100644
--- a/tests/php/ContentReviewSettingsTest.php
+++ b/tests/php/ContentReviewSettingsTest.php
@@ -4,7 +4,6 @@ namespace SilverStripe\ContentReview\Tests;
 
 use function date;
 use Page;
-use PHPUnit_Framework_TestCase;
 use SilverStripe\CMS\Controllers\CMSPageEditController;
 use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\ContentReview\Extensions\ContentReviewCMSExtension;
@@ -22,8 +21,6 @@ use SilverStripe\SiteConfig\SiteConfig;
 /**
  * This class tests that settings are inherited correctly based on the inherited,
  * custom or disabled settings.
- *
- * @mixin PHPUnit_Framework_TestCase
  */
 class ContentReviewSettingsTest extends SapphireTest
 {
diff --git a/tests/php/Extensions/ContentReviewCMSExtensionTest.php b/tests/php/Extensions/ContentReviewCMSExtensionTest.php
index b060a90..d53abd8 100644
--- a/tests/php/Extensions/ContentReviewCMSExtensionTest.php
+++ b/tests/php/Extensions/ContentReviewCMSExtensionTest.php
@@ -5,6 +5,7 @@ namespace SilverStripe\ContentReview\Tests\Extensions;
 use SilverStripe\ContentReview\Extensions\ContentReviewCMSExtension;
 use SilverStripe\ContentReview\Forms\ReviewContentHandler;
 use SilverStripe\Control\Controller;
+use SilverStripe\Control\HTTPResponse_Exception;
 use SilverStripe\Control\HTTPRequest;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\Form;
@@ -29,21 +30,17 @@ class ContentReviewCMSExtensionTest extends SapphireTest
         $this->assertTrue($result);
     }
 
-    /**
-     * @expectedException SilverStripe\Control\HTTPResponse_Exception
-     * @expectedExceptionMessage Bad record ID #1234
-     */
     public function testGetReviewContentFormThrowsExceptionWhenPageNotFound()
     {
+        $this->expectException(HTTPResponse_Exception::class);
+        $this->expectExceptionMessage('Bad record ID #1234');
         (new ContentReviewCMSExtension)->getReviewContentForm(1234);
     }
 
-    /**
-     * @expectedException SilverStripe\Control\HTTPResponse_Exception
-     * @expectedExceptionMessage It seems you don't have the necessary permissions to review this content
-     */
     public function testGetReviewContentFormThrowsExceptionWhenObjectCannotBeReviewed()
     {
+        $this->expectException(HTTPResponse_Exception::class);
+        $this->expectExceptionMessage('It seems you don\'t have the necessary permissions to review this content');
         $this->logOut();
 
         $mock = $this->getMockBuilder(ContentReviewCMSExtension::class)
diff --git a/tests/php/Forms/ReviewContentHandlerTest.php b/tests/php/Forms/ReviewContentHandlerTest.php
index 7561224..8b01163 100644
--- a/tests/php/Forms/ReviewContentHandlerTest.php
+++ b/tests/php/Forms/ReviewContentHandlerTest.php
@@ -14,6 +14,7 @@ use SilverStripe\Forms\Form;
 use SilverStripe\Forms\HiddenField;
 use SilverStripe\Forms\TextareaField;
 use SilverStripe\Security\Member;
+use SilverStripe\ORM\ValidationException;
 
 class ReviewContentHandlerTest extends SapphireTest
 {
@@ -37,12 +38,10 @@ class ReviewContentHandlerTest extends SapphireTest
         $this->assertTrue($saveAction->hasClass('review-content__action'));
     }
 
-    /**
-     * @expectedException SilverStripe\ORM\ValidationException
-     * @expectedExceptionMessage It seems you don't have the necessary permissions to submit a content review
-     */
     public function testExceptionThrownWhenSubmittingReviewForInvalidObject()
     {
+        $this->expectException(ValidationException::class);
+        $this->expectExceptionMessage('It seems you don\'t have the necessary permissions to submit a content review');
         ReviewContentHandler::create()->submitReview(new Member, ['foo' => 'bar']);
     }
 
diff --git a/tests/php/SiteTreeContentReviewTest.php b/tests/php/SiteTreeContentReviewTest.php
index aefebd5..395947d 100644
--- a/tests/php/SiteTreeContentReviewTest.php
+++ b/tests/php/SiteTreeContentReviewTest.php
@@ -17,9 +17,6 @@ use SilverStripe\Security\Member;
 use SilverStripe\SiteConfig\SiteConfig;
 use SilverStripe\Versioned\Versioned;
 
-/**
- * @mixin PHPUnit_Framework_TestCase
- */
 class SiteTreeContentReviewTest extends ContentReviewBaseTest
 {
     protected $usesTransactions = false;