diff --git a/backend/core/settings.py b/backend/core/settings.py
index 276129f..9d3dc36 100644
--- a/backend/core/settings.py
+++ b/backend/core/settings.py
@@ -41,6 +41,15 @@ if not DEBUG:
     ]
     # CORS_ALLOWED_ORIGINS = [f"https://{API_DOMAIN}", f"http://{API_DOMAIN}",
     #                         f"http://{DOMAIN}", f"https://{DOMAIN}", ]
+    # import re
+    # CORS_ALLOWED_ORIGIN_REGEXES = [
+    #     re.compile(r'^https?://(?:\w+\.)?{}$'.format(re.escape(API_DOMAIN))),
+    #     re.compile(r'^https?://(?:\w+\.)?{}$'.format(re.escape(DOMAIN))),
+    #     re.compile(r'^https?://(?:\w+\.)?localhost:\d+$'),
+    #     re.compile(r'^https?://(?:\w+\.)?127\.0\.0\.1:\d+$'),
+    # ]
+
+
     CORS_ALLOW_ALL_ORIGINS = True
     # database postgres
     DATABASES = {