diff --git a/composer.json b/composer.json
index 7bbd45a..74c127e 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         "phpbench/phpbench":         "^0.16 || ^1",
         "phpstan/phpstan":           "^1.4",
         "phpstan/phpstan-phpunit":   "^1",
-        "phpunit/phpunit":           "^7.5 || ^8.5 || ^9.5",
+        "phpunit/phpunit":           "^7.5 || ^8.5 || ^9.6",
         "vimeo/psalm": "^4.30 || ^5.4"
     },
     "autoload": {
diff --git a/tests/DoctrineTest/InstantiatorTest/InstantiatorTest.php b/tests/DoctrineTest/InstantiatorTest/InstantiatorTest.php
index 3e2a2c2..08e4f7c 100644
--- a/tests/DoctrineTest/InstantiatorTest/InstantiatorTest.php
+++ b/tests/DoctrineTest/InstantiatorTest/InstantiatorTest.php
@@ -123,7 +123,7 @@ class $className {}
      * @return string[][]
      * @phpstan-return list<array{class-string}>
      */
-    public function getInstantiableClasses(): array
+    public static function getInstantiableClasses(): array
     {
         return [
             [stdClass::class],
@@ -152,7 +152,7 @@ public function getInstantiableClasses(): array
      *
      * @psalm-return Generator<string, array{string}>
      */
-    public function getInvalidClassNames(): Generator
+    public static function getInvalidClassNames(): Generator
     {
         yield 'invalid string' => [self::class . str_replace('.', '', uniqid('', true))];
         yield 'interface' => [InstantiatorInterface::class];