diff --git a/docker-compose.yml b/docker-compose.yml
index 3835c20a..b342157a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -47,4 +47,4 @@ networks:
       driver: default
       config:
         - subnet: 10.42.42.0/24
-        - subnet: fd00::0/120
+        - subnet: fd00::0/112