diff --git a/composer.json b/composer.json
index c4e999e4..ece4f29f 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
         "silverstripe/vendor-plugin": "^2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^11.3",
         "squizlabs/php_codesniffer": "^3.7",
         "silverstripe/standards": "^1",
         "phpstan/extension-installer": "^1.3"
diff --git a/tests/ReportAdminTest.php b/tests/ReportAdminTest.php
index 36776c6d..d29b2819 100644
--- a/tests/ReportAdminTest.php
+++ b/tests/ReportAdminTest.php
@@ -10,6 +10,7 @@
 use SilverStripe\Reports\Tests\ReportAdminTest\CannotViewReport;
 use SilverStripe\Reports\Tests\ReportAdminTest\FakeReport;
 use SilverStripe\Reports\Tests\ReportAdminTest\FakeReport2;
+use PHPUnit\Framework\Attributes\DataProvider;
 
 class ReportAdminTest extends FunctionalTest
 {
@@ -46,7 +47,7 @@ public function testBreadcrumbsAreGenerated()
         $this->assertSame('Fake report two', $map['Title']);
     }
 
-    public function provideShowReport(): array
+    public static function provideShowReport(): array
     {
         return [
             'cannot view' => [
@@ -60,9 +61,7 @@ public function provideShowReport(): array
         ];
     }
 
-    /**
-     * @dataProvider provideShowReport
-     */
+    #[DataProvider('provideShowReport')]
     public function testShowReport(string $reportClass, int $expected): void
     {
         $this->logInWithPermission('ADMIN');
diff --git a/tests/ReportTest.php b/tests/ReportTest.php
index 07168461..da980ab7 100644
--- a/tests/ReportTest.php
+++ b/tests/ReportTest.php
@@ -6,8 +6,8 @@
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\Forms\GridField\GridFieldDataColumns;
 use SilverStripe\Reports\Tests\ReportTest\FakeObject;
-use SilverStripe\Reports\Tests\ReportTest\FakeTest;
-use SilverStripe\Reports\Tests\ReportTest\FakeTest2;
+use SilverStripe\Reports\Tests\ReportTest\FakeReport;
+use SilverStripe\Reports\Tests\ReportTest\FakeReport2;
 use SilverStripe\Reports\Report;
 
 class ReportTest extends SapphireTest
@@ -34,22 +34,22 @@ public function testExcludeReport()
         foreach ($reports as $report) {
             $reportNames[] = get_class($report);
         }
-        $this->assertContains(FakeTest::class, $reportNames, 'ReportTest_FakeTest is in reports list');
+        $this->assertContains(FakeReport::class, $reportNames, 'ReportTest_FakeReport is in reports list');
 
         // Exclude one report
-        Config::modify()->merge(Report::class, 'excluded_reports', [FakeTest::class]);
+        Config::modify()->merge(Report::class, 'excluded_reports', [FakeReport::class]);
 
         $reports = Report::get_reports();
         $reportNames = array();
         foreach ($reports as $report) {
             $reportNames[] = get_class($report);
         }
-        $this->assertNotContains(FakeTest::class, $reportNames, 'ReportTest_FakeTest is NOT in reports list');
+        $this->assertNotContains(FakeReport::class, $reportNames, 'ReportTest_FakeReport is NOT in reports list');
 
         // Exclude two reports
         Config::modify()->merge(Report::class, 'excluded_reports', [
-            FakeTest::class,
-            FakeTest2::class
+            FakeReport::class,
+            FakeReport2::class
         ]);
 
         $reports = Report::get_reports();
@@ -57,8 +57,8 @@ public function testExcludeReport()
         foreach ($reports as $report) {
             $reportNames[] = get_class($report);
         }
-        $this->assertNotContains(FakeTest::class, $reportNames, 'ReportTest_FakeTest is NOT in reports list');
-        $this->assertNotContains(FakeTest2::class, $reportNames, 'ReportTest_FakeTest2 is NOT in reports list');
+        $this->assertNotContains(FakeReport::class, $reportNames, 'ReportTest_FakeReport is NOT in reports list');
+        $this->assertNotContains(FakeReport2::class, $reportNames, 'ReportTest_FakeReport2 is NOT in reports list');
     }
 
     public function testAbstractClassesAreExcluded()
@@ -69,15 +69,15 @@ public function testAbstractClassesAreExcluded()
             $reportNames[] = get_class($report);
         }
         $this->assertNotContains(
-            'ReportTest_FakeTest_Abstract',
+            'ReportTest_FakeReport_Abstract',
             $reportNames,
-            'ReportTest_FakeTest_Abstract is NOT in reports list as it is abstract'
+            'ReportTest_FakeReport_Abstract is NOT in reports list as it is abstract'
         );
     }
 
     public function testPermissions()
     {
-        $report = new ReportTest\FakeTest2();
+        $report = new ReportTest\FakeReport2();
 
         // Visitor cannot view
         $this->logOut();
@@ -98,7 +98,7 @@ public function testPermissions()
 
     public function testColumnLink()
     {
-        $report = new ReportTest\FakeTest();
+        $report = new ReportTest\FakeReport();
         /** @var GridField $gridField */
         $gridField = $report->getReportField();
         /** @var GridFieldDataColumns $columns */
@@ -117,17 +117,17 @@ public function testColumnLink()
 
     public function testCountForOverview()
     {
-        $report = new ReportTest\FakeTest3();
+        $report = new ReportTest\FakeReport3();
 
         // Count is limited to 10000 by default
         $this->assertEquals('10000+', $report->getCountForOverview());
 
         // Count is limited as per configuration
-        Config::modify()->set(ReportTest\FakeTest3::class, 'limit_count_in_overview', 15);
+        Config::modify()->set(ReportTest\FakeReport3::class, 'limit_count_in_overview', 15);
         $this->assertEquals('15+', $report->getCountForOverview());
 
         // A null limit displays the full count
-        Config::modify()->set(ReportTest\FakeTest3::class, 'limit_count_in_overview', null);
+        Config::modify()->set(ReportTest\FakeReport3::class, 'limit_count_in_overview', null);
         $this->assertEquals('15000', $report->getCountForOverview());
     }
 }
diff --git a/tests/ReportTest/FakeTest.php b/tests/ReportTest/FakeReport.php
similarity index 91%
rename from tests/ReportTest/FakeTest.php
rename to tests/ReportTest/FakeReport.php
index 7194ba55..76774c01 100644
--- a/tests/ReportTest/FakeTest.php
+++ b/tests/ReportTest/FakeReport.php
@@ -6,7 +6,7 @@
 use SilverStripe\ORM\ArrayList;
 use SilverStripe\Reports\Report;
 
-class FakeTest extends Report implements TestOnly
+class FakeReport extends Report implements TestOnly
 {
     public function title()
     {
diff --git a/tests/ReportTest/FakeTest2.php b/tests/ReportTest/FakeReport2.php
similarity index 91%
rename from tests/ReportTest/FakeTest2.php
rename to tests/ReportTest/FakeReport2.php
index 736de851..145e1579 100644
--- a/tests/ReportTest/FakeTest2.php
+++ b/tests/ReportTest/FakeReport2.php
@@ -6,7 +6,7 @@
 use SilverStripe\ORM\ArrayList;
 use SilverStripe\Reports\Report;
 
-class FakeTest2 extends Report implements TestOnly
+class FakeReport2 extends Report implements TestOnly
 {
     public function title()
     {
diff --git a/tests/ReportTest/FakeTest3.php b/tests/ReportTest/FakeReport3.php
similarity index 83%
rename from tests/ReportTest/FakeTest3.php
rename to tests/ReportTest/FakeReport3.php
index b327303c..d84218c3 100644
--- a/tests/ReportTest/FakeTest3.php
+++ b/tests/ReportTest/FakeReport3.php
@@ -6,7 +6,7 @@
 use SilverStripe\ORM\ArrayList;
 use SilverStripe\Reports\Report;
 
-class FakeTest3 extends Report implements TestOnly
+class FakeReport3 extends Report implements TestOnly
 {
     public function sourceRecords($params, $sort, $limit)
     {
diff --git a/tests/ReportTest/FakeTestAbstract.php b/tests/ReportTest/FakeTestAbstract.php
index 08aadb6d..00a3f4a7 100644
--- a/tests/ReportTest/FakeTestAbstract.php
+++ b/tests/ReportTest/FakeTestAbstract.php
@@ -6,7 +6,7 @@
 use SilverStripe\ORM\ArrayList;
 use SilverStripe\Reports\Report;
 
-abstract class FakeTestAbstract extends Report implements TestOnly
+abstract class FakeReportAbstract extends Report implements TestOnly
 {
     public function title()
     {