diff --git a/kaleid.eu.zone b/kaleid.eu.zone
index b79a8f9..617c54c 100644
--- a/kaleid.eu.zone
+++ b/kaleid.eu.zone
@@ -1,6 +1,6 @@
 $TTL 60m
 kaleid.eu.             IN SOA   dns.libre-en-communs.org. contact.a-lec.org. (         
-                        2210121510 ; serial AAMMDDHHmm
+                        2210121521 ; serial AAMMDDHHmm
                         86400      ; refresh (1 day)
                         3600       ; retry (1 hour)
                         3600000    ; expire (5 weeks 6 days 16 hours)