diff --git a/docker-compose.yaml b/docker-compose.yaml
index b4b8e93..7596a66 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -125,3 +125,7 @@ services:
     volumes:
       # :Z, same SELinux reasoning as maptool's own ./data mount above.
       - ./data/kiwix/wikipedia.zim:/data/wikipedia.zim:Z
+
+networks:
+  default:
+    enable_ipv6: true