diff --git a/nbit.ch.zone b/nbit.ch.zone
index 60993ac..4c00fa5 100644
--- a/nbit.ch.zone
+++ b/nbit.ch.zone
@@ -2,7 +2,7 @@ $TTL 4h
 $ORIGIN nbit.ch.
 
 @  1D  IN	 SOA ns1.nbit.ch. hostmaster.nbit.ch. (
-			      2022122201; serial
+			      2022122401; serial
 			      3H ; refresh
 			      120; retry
 			      2w ; expire
@@ -18,8 +18,8 @@ $ORIGIN nbit.ch.
 ; server host definitions
               IN      A       5.75.251.111
               IN      AAAA    2a01:4f8:c012:c21c::1
-ns1       600 IN      A       168.119.114.44
-ns1       600 IN      AAAA    2a01:4f8:c2c:9c5e::1
+ns1           IN      A       168.119.114.44
+ns1           IN      AAAA    2a01:4f8:c2c:9c5e::1
 ns2           IN      A       5.75.251.111
 ns2           IN      AAAA    2a01:4f8:c012:c21c::1
 autodiscover  IN      CNAME   mail.nbit.ch.