diff --git a/server/backend/adapters/http/main.py b/server/backend/adapters/http/main.py
index 1fa003a..956bbca 100644
--- a/server/backend/adapters/http/main.py
+++ b/server/backend/adapters/http/main.py
@@ -7,7 +7,7 @@ app = FastAPI(title="SimuGazAPI", version="1.0.0")
 
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["*"],
+    allow_origins=["https://demo.agreg.ungol.fr"],
     allow_methods=["GET"],
     allow_headers=["*"],
 )