diff --git a/data/bremen.freifunk.net.zone b/data/bremen.freifunk.net.zone
index 6e642f9..6bdfe3b 100644
--- a/data/bremen.freifunk.net.zone
+++ b/data/bremen.freifunk.net.zone
@@ -1,6 +1,6 @@
 $TTL 1D
 @					IN	SOA	ns01 noc.bremen.freifunk.net. (
-				    2015032503	; Serial
+				    2015032504	; Serial
 				    4H		; Refresh
 				    1H		; Retry
 				    2W		; Expire
@@ -27,6 +27,7 @@ ns03				A	92.222.47.180
 vpn01			30s	A	176.9.147.213
 vpn02			30s	A	31.24.146.93
 vpn03			30s	A	37.72.148.148
+vpn04			30s	A	136.243.21.39
 vpn				CNAME	@
 
 ; mail