diff --git a/composer.json b/composer.json
index 7ea9ded..f461963 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
         "guzzlehttp/guzzle": "^7.5"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^11.3",
         "squizlabs/php_codesniffer": "^3",
         "symfony/thanks": "^1.2",
         "silverstripe/standards": "^1",
diff --git a/tests/Model/PackageTest.php b/tests/Model/PackageTest.php
index 4392c07..6259939 100644
--- a/tests/Model/PackageTest.php
+++ b/tests/Model/PackageTest.php
@@ -9,7 +9,7 @@
 
 class PackageTest extends SapphireTest
 {
-    public function providePackageNamesAndTitles()
+    public static function providePackageNamesAndTitles()
     {
         return [
             ['pretendvendor/silverstripe-prefixedpackage', 'prefixedpackage'],
diff --git a/tests/Util/ApiLoaderTest.php b/tests/Util/ApiLoaderTest.php
index 2bf1043..86f705c 100644
--- a/tests/Util/ApiLoaderTest.php
+++ b/tests/Util/ApiLoaderTest.php
@@ -125,7 +125,7 @@ protected function getCacheKey()
         $inst->parseResponseContents($contents, $failureMessage);
     }
 
-    public function provideParseResponseContentsEmpty(): array
+    public static function provideParseResponseContentsEmpty(): array
     {
         return [
             [