diff --git a/.pullapprove.yml b/.pullapprove.yml
index 24b9b25..4ecd13a 100644
--- a/.pullapprove.yml
+++ b/.pullapprove.yml
@@ -6,6 +6,7 @@ requirements:
 
 group_defaults:
   required: 2
+  reject_value: -1
   approve_by_comment:
     enabled: true
     approve_regex: ^LGTM