diff --git a/phpstan.neon b/phpstan.neon
index 612dc66eb9..d13eed8ba6 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,5 @@
 parameters:
-	level: 3
+	level: 4
 	inferPrivatePropertyTypeFromConstructor: true
 	paths:
 		- application