diff --git a/tests/phpstan.neon b/tests/phpstan.neon
index 3c43eedb..1ba74d6e 100644
--- a/tests/phpstan.neon
+++ b/tests/phpstan.neon
@@ -1,5 +1,5 @@
 parameters:
-  level: 0
+  level: 1
   paths:
     - ../core
     - ../ext