diff --git a/grumphp.yml.dist b/grumphp.yml.dist
index 8cdcd31..c94485f 100644
--- a/grumphp.yml.dist
+++ b/grumphp.yml.dist
@@ -13,5 +13,5 @@ parameters:
       threads: 10
       test_framework: phpspec
       configuration: infection.json.dist
-      min_msi: 60
+      min_msi: 40
       min_covered_msi: 90