diff --git a/src/pqnstack/app/main.py b/src/pqnstack/app/main.py
index 823d17f4..840269f9 100644
--- a/src/pqnstack/app/main.py
+++ b/src/pqnstack/app/main.py
@@ -1,6 +1,7 @@
 import logging
 
 from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
 
 from pqnstack.app.api.main import api_router
 
@@ -11,6 +12,15 @@
     title="Public Quantum Network",
 )
 
+# Add CORS middleware to allow all origins
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # Allows all origins
+    allow_credentials=True,
+    allow_methods=["*"],  # Allows all methods
+    allow_headers=["*"],  # Allows all headers
+)
+
 app.include_router(api_router)