diff --git a/composer.json b/composer.json
index 2bbd539..f808c61 100644
--- a/composer.json
+++ b/composer.json
@@ -44,7 +44,7 @@
 		"phpspec/prophecy": "^1.15.0",
 		"phpspec/prophecy-phpunit": "2.0.1",
 		"phpstan/extension-installer": "^1.2.0",
-		"phpstan/phpstan": "^1.8.11",
+		"phpstan/phpstan": "^1.9.0",
 		"phpstan/phpstan-phpunit": "^1.2.2",
 		"phpstan/phpstan-strict-rules": "^1.4.4",
 		"phpunit/phpunit": "^9.5.26",