diff --git a/lib/constants.js b/lib/constants.js
index 5e23e512..1c63ae18 100644
--- a/lib/constants.js
+++ b/lib/constants.js
@@ -1,6 +1,6 @@
 export const AUTH_COOKIE_NAME = 'umami.auth';
 
-export const DOMAIN_REGEX = /(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]/;
+export const DOMAIN_REGEX = /((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}/;
 
 export const DESKTOP_SCREEN_WIDTH = 1920;
 export const LAPTOP_SCREEN_WIDTH = 1024;