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..d6553e22 100644
--- a/tests/ReportAdminTest.php
+++ b/tests/ReportAdminTest.php
@@ -46,7 +46,7 @@ public function testBreadcrumbsAreGenerated()
         $this->assertSame('Fake report two', $map['Title']);
     }
 
-    public function provideShowReport(): array
+    public static function provideShowReport(): array
     {
         return [
             'cannot view' => [