diff --git a/grumphp.yml b/grumphp.yml
index c2226b1fe40b399bb893fc4f6818011019ef552f..1be584d1925fcb14f596de4745f27fac5ecd5b95 100644
--- a/grumphp.yml
+++ b/grumphp.yml
@@ -1,4 +1,5 @@
 grumphp:
     tasks:
         phpcs: ~
-        phpstan: ~
+        phpstan:
+          memory_limit: "-1"