diff --git a/src/main.rs b/src/main.rs
index 55fddde..611059e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -90,6 +90,9 @@ async fn main() -> Result<(), Box<dyn Error>> {
 
   let api_server = HttpServer::new(move || {
     let cors = Cors::default()
+      .allowed_origin_fn(|origin, _req_head| {
+        origin.as_bytes().ends_with(b"dstn.to")
+      })
       .allowed_origin_fn(|origin, _req_head| {
         origin.as_bytes().ends_with(b".dstn.to")
       })