diff --git a/docker-compose.yml b/docker-compose.yml
index fba1917..1069fdd 100755
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -82,7 +82,7 @@ services:
             - ${SASLAUTHD_SOCKET_FILE}:/var/run/saslauthd/mux
         environment:
             CONTAINER_NETWORK_V4: 10.222.222.0/28
-            CONTAINER_NETWORK_V6: fd00:bee::/127
+            CONTAINER_NETWORK_V6: fd00:bee::/124
             TZ: UTC
             OVERRIDE_HOSTNAME: ${OVERRIDE_HOSTNAME}
             ENABLE_MTA_STS: "1"
@@ -390,7 +390,7 @@ networks:
                   ip_range: 10.222.222.0/28
                   gateway: 10.222.222.14
 
-                - subnet: fd00:bee::/127
+                - subnet: fd00:bee::/124
                   # 16 hosts
                   # From fd00:bee:: to fd00:bee::f
                   gateway: fd00:bee::f