diff --git a/db.playground b/db.playground
index 389bd44..3be6716 100644
--- a/db.playground
+++ b/db.playground
@@ -1,7 +1,7 @@
 $ORIGIN playground.
 $TTL 86400
 @	SOA	ns1.playground.	abuse.playground. (
-		2023032002 ; serial
+		2023032003 ; serial
 		21600      ; refresh after 6 hours
 		3600       ; retry after 1 hour
 		604800     ; expire after 1 week