diff --git a/base.yml b/base.yml
index 93ce3d3..aa52061 100644
--- a/base.yml
+++ b/base.yml
@@ -13,7 +13,7 @@ services:
       - postgres
       - redis
     ports:
-      - "10.2.3.1:5000:5000/tcp" # auth access
+      - "${MISTBORN_DNS_BIND_IP}:5000:5000/tcp" # auth access
     labels:
       - "traefik.enable=true"
       - "traefik.http.routers.django-http.rule=Host(`home.mistborn`)"
@@ -91,7 +91,7 @@ services:
     image: mistborn_production_portal
     container_name: mistborn_production_portal
     ports:
-      - "10.2.3.1:5001:80"
+      - "${MISTBORN_DNS_BIND_IP}:5001:80"
     environment:
       - SERVER_REDIRECT=home.mistborn
     # optionally define path to redirect all requests