diff --git a/nixos/systems/blowhole/zones/hosts.in.redalder.org.zone b/nixos/systems/blowhole/zones/hosts.in.redalder.org.zone
index da1505d..f29d738 100644
--- a/nixos/systems/blowhole/zones/hosts.in.redalder.org.zone
+++ b/nixos/systems/blowhole/zones/hosts.in.redalder.org.zone
@@ -2,7 +2,7 @@ $ORIGIN in.redalder.org.
 $TTL 5m
 
 hosts		IN	SOA	ns.in.redalder.org.	root.redalder.org.	(
-				14			; serial
+				15			; serial
 				4h			; refresh
 				15m			; retry
 				8h			; expire
@@ -14,3 +14,4 @@ $ORIGIN hosts.in.redalder.org.
 
 blowhole	IN	A	10.64.2.1
 toothpick	IN	A	10.64.0.1
+altra		IN	A	10.64.0.11
diff --git a/nixos/systems/blowhole/zones/in.redalder.org.zone b/nixos/systems/blowhole/zones/in.redalder.org.zone
index f091c83..e55b583 100644
--- a/nixos/systems/blowhole/zones/in.redalder.org.zone
+++ b/nixos/systems/blowhole/zones/in.redalder.org.zone
@@ -2,7 +2,7 @@ $ORIGIN redalder.org.
 $TTL 5m
 
 in		IN	SOA	ns.redalder.org.	root.redalder.org.	(
-				24			; serial
+				26			; serial
 				4h			; refresh
 				15m			; retry
 				8h			; expire
@@ -23,4 +23,5 @@ syncthing	IN	A	10.64.2.1
 influx		IN	A	10.64.2.1
 mainsail	IN	A	10.64.2.1
 matrix		IN	A	10.64.2.1
+synapse-proxy	IN	CNAME	altra.hosts.in.redalder.org