diff --git a/backend/app/core/config.py b/backend/app/core/config.py
index 9fe96c2..4810a50 100644
--- a/backend/app/core/config.py
+++ b/backend/app/core/config.py
@@ -46,8 +46,8 @@ def server_host(self) -> str:
         list[AnyUrl] | str, BeforeValidator(parse_cors)
     ] = []
 
-    BACKEND_CORS_ORIGINS.append(Url("http://admin.ituacm.com"))
-    BACKEND_CORS_ORIGINS.append(Url("https://admin.ituacm.com"))
+    BACKEND_CORS_ORIGINS.append("http://admin.ituacm.com")
+    BACKEND_CORS_ORIGINS.append("https://admin.ituacm.com")
 
     PROJECT_NAME: str
     SENTRY_DSN: HttpUrl | None = None