diff --git a/composer.json b/composer.json
index a0cf20a..f711650 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
 		"roave/security-advisories": "dev-latest",
 		"nextcloud/coding-standard": "^1.3.2",
 		"nextcloud/rector": "^0.3.1",
-		"phpstan/phpstan": "~1.12.20",
+		"phpstan/phpstan": "~1.12.21",
 		"phpstan/phpstan-deprecation-rules": "~1.2.1",
 		"rector/rector": "~1.2.10"
 	},