diff --git a/composer.json b/composer.json
index 615fd95..8c9211d 100644
--- a/composer.json
+++ b/composer.json
@@ -26,9 +26,9 @@
   },
   "require-dev": {
     "roave/security-advisories": "dev-latest",
-    "phpstan/phpstan": "^1.10",
+    "phpstan/phpstan": "^2",
     "squizlabs/php_codesniffer": "^4.0.x-dev",
-    "phpunit/phpunit": "^10.2"
+    "phpunit/phpunit": "^11"
   },
   "autoload": {
     "psr-4": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 484be13..0d2d107 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -1,4 +1,5 @@
 parameters:
   level: 9
+  treatPhpDocTypesAsCertain: false
   paths:
     - src
\ No newline at end of file
diff --git a/tests/Unit/Types/TagsTest.php b/tests/Unit/Types/TagsTest.php
index 790e387..c240234 100644
--- a/tests/Unit/Types/TagsTest.php
+++ b/tests/Unit/Types/TagsTest.php
@@ -200,7 +200,7 @@ public static function dataProvider_contains(): iterable
 
         yield ['tags' => ['foo:bar'], 'tag' => 'key:bar2', 'expectedResult' => false];
         yield ['tags' => ['foo:bar'], 'tag' => 'bar:bar', 'expectedResult' => false];
-        yield ['tags' => ['foo:bar', 'baz:foos'], 'bar' => 'notFoo:notBar', 'expectedResult' => false];
+        yield ['tags' => ['foo:bar', 'baz:foos'], 'tag' => 'notFoo:notBar', 'expectedResult' => false];
     }
 
     /**