diff --git a/server.py b/server.py
index 45d023b..8adca1d 100644
--- a/server.py
+++ b/server.py
@@ -3,15 +3,28 @@
 import uvicorn
 from fastapi import FastAPI
 from pydantic import BaseModel
+from fastapi.middleware.cors import CORSMiddleware
 
 import compas
 from compas.geometry import Box
 from compas.datastructures import Mesh
-from compas.utilities import flatten
+from compas.itertools import flatten
 
 
 app = FastAPI()
 
+origins = [
+    "http://localhost:3000",  # Frontend origin
+]
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 
 class BoxInput(BaseModel):
     xsize: float