diff --git a/py-src/data_formulator/app.py b/py-src/data_formulator/app.py
index 032edef..72f4047 100644
--- a/py-src/data_formulator/app.py
+++ b/py-src/data_formulator/app.py
@@ -46,6 +46,8 @@
 load_dotenv(os.path.join(APP_ROOT, 'openai-keys.env'))
 
 import os
+import mimetypes
+mimetypes.add_type('application/javascript', '.js')
 
 app = Flask(__name__, static_url_path='', static_folder=os.path.join(APP_ROOT, "dist"))
 CORS(app)