diff --git a/backend/config.py b/backend/config.py
index 88b58c670ecd96b2648bd3f2cd1df3f3d35ea1b1..313984a9ab5a6cfb61bbd4d1481c44b61d9e4d3a 100644
--- a/backend/config.py
+++ b/backend/config.py
@@ -5,6 +5,9 @@ class Settings(BaseSettings):
     # we may want use DSN validators from pydantic.
     # but there are no sqlite validators?
     database_url: str = "sqlite:///./paketshop.db"
+    backend_url: str = "http://localhost:8000"
+    customer_url: str = "http://localhost:3000"
+    worker_url: str = "http://localhost:3002"
 
     class Config:
         env_file = ".env"
diff --git a/backend/main.py b/backend/main.py
index 3b9af59a20b603ec2b778f22df81bd3ff8a422d3..af974d8d896018c1e30edbebcb64c6924cb353f1 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -5,13 +5,14 @@ from fastapi.middleware.cors import CORSMiddleware
 from sqlalchemy.orm import Session
 
 from . import schemas, utils
+from .config import settings
 from .database import SessionLocal, create_database
 
 create_database()
 
 app = FastAPI()
 
-origins = ["http://127.0.0.1:8000", "http://localhost:3000", "http://localhost:3002"]
+origins = [settings.customer_url, settings.worker_url]
 
 
 app.add_middleware(