diff --git a/nbit.ch.zone b/nbit.ch.zone
index 15ae7fc..ec2501c 100644
--- a/nbit.ch.zone
+++ b/nbit.ch.zone
@@ -1,8 +1,8 @@
-$TTL 4h
+$TTL 15m
 $ORIGIN nbit.ch.
 
 @  1D  IN	 SOA ns1.nbit.ch. hostmaster.nbit.ch. (
-			      2023030301; serial
+			      2024080501; serial
 			      3H ; refresh
 			      120; retry
 			      2w ; expire