diff --git a/backend/.env b/backend/.env
index 9dce796..9c013c1 100644
--- a/backend/.env
+++ b/backend/.env
@@ -4,6 +4,7 @@ DB_PASS=88dbeaf8-e906-405e-9e41-c3baadeda5c6
 DB_HOST=127.0.0.1
 DB_PORT=5432
 PORT=3000
+PLATFORM_ROOT_DOMAIN=tour-builder-platform-2eb6.dev.flatlogic.app
 GOOGLE_CLIENT_ID=671001533244-kf1k1gmp6mnl0r030qmvdu6v36ghmim6.apps.googleusercontent.com
 GOOGLE_CLIENT_SECRET=Yo4qbKZniqvojzUQ60iKlxqR
 MS_CLIENT_ID=4696f457-31af-40de-897c-e00d7d4cff73