diff --git a/chain_service/app.py b/chain_service/app.py
index 66d3ccf..63aa448 100644
--- a/chain_service/app.py
+++ b/chain_service/app.py
@@ -1,9 +1,17 @@
 from chain_service.logging import setup_logging
 
 from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
 from chain_service.controllers.__main__ import setup_controllers
 
 setup_logging()
 
 application = FastAPI()
+
+application.add_middleware(
+    CORSMiddleware,
+    allow_origins=["http://localhost:5173"],
+    allow_methods=["*"],
+)
+
 setup_controllers(application)