diff --git a/docker-compose.yml b/docker-compose.yml
index 4d1c981..eac9877 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,7 +7,7 @@ networks:
     enable_ipv6: ${ENABLE_IPV6}
     ipam:
       config:
-        - subnet: 2001:db8::/64
+        - subnet: ${IPV6_SUBNET}
 services:
   # for local https development using self-signed certs via openssl
   # nginx: