diff --git a/.env.example b/.env.example
index 7162c5c..ef00e0b 100644
--- a/.env.example
+++ b/.env.example
@@ -47,3 +47,8 @@ PUSHER_APP_CLUSTER=mt1
 
 MIX_PUSHER_APP_KEY="${PUSHER_APP_KEY}"
 MIX_PUSHER_APP_CLUSTER="${PUSHER_APP_CLUSTER}"
+
+FORWARD_DB_PORT=3306
+FORWARD_REDIS_PORT=6379
+FORWARD_MAILHOG_PORT=1025
+FORWARD_MAILHOG_DASHBOARD_PORT=8025