diff --git a/fri/server/main.py b/fri/server/main.py
index e546761..203a94d 100644
--- a/fri/server/main.py
+++ b/fri/server/main.py
@@ -5,6 +5,7 @@
 from pathlib import Path
 import json
 import subprocess
+from flask_cors import CORS, cross_origin
 
 cur_path = os.path.dirname(os.path.abspath(__file__))
 concore_path = os.path.abspath(os.path.join(cur_path, '../../'))
@@ -13,6 +14,9 @@
 app = Flask(__name__)
 app.secret_key = "secret key"
 
+cors = CORS(app)
+app.config['CORS_HEADERS'] = 'Content-Type'
+
 # To upload multiple file. For example, /upload/test?apikey=xyz
 @app.route('/upload/<dir>', methods=['POST'])
 def upload(dir):