diff --git a/hack/diff.sh b/hack/diff.sh
index 1a14008..e88957b 100755
--- a/hack/diff.sh
+++ b/hack/diff.sh
@@ -71,4 +71,6 @@ function main() {
     wait
 }
 
+trap "trap - EXIT && kill 0 && wait && echo exit..." EXIT
+
 main