diff --git a/phpstan.neon b/phpstan.neon
index 9137f46..28a65c2 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -2,7 +2,7 @@ includes:
 	- src/includes/vendor/phpstan/phpstan-deprecation-rules/rules.neon
 
 parameters:
-	level: 1
+	level: 4
 	paths:
 		- src
 	excludePaths: