diff --git a/docker-compose.yml b/docker-compose.yml
index a744182..0f67e81 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -48,6 +48,10 @@ services:
       - ARTDAG_DATA=/data/l2
       - IPFS_API=/dns/ipfs/tcp/5001
       - ANCHOR_BACKUP_DIR=/data/anchors
+      # Coop app internal URLs for fragment composition
+      - INTERNAL_URL_BLOG=http://blog:8000
+      - INTERNAL_URL_CART=http://cart:8000
+      - INTERNAL_URL_ACCOUNT=http://account:8000
       # DATABASE_URL, ARTDAG_DOMAIN, ARTDAG_USER, JWT_SECRET from .env file
     healthcheck:
       test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8200/')"]