diff --git a/aggregates.yaml b/aggregates.yaml
index d6a46cc..70d4c13 100644
--- a/aggregates.yaml
+++ b/aggregates.yaml
@@ -6,6 +6,8 @@ aggregates:
       event: received
     sluttet:
       event: sluttet
+      leaves_after:
+        minutes: 10
   transitions:
     open:
     - sluttet