diff --git a/CNAME b/CNAME
index cfec7d36..ce3ff23d 100644
--- a/CNAME
+++ b/CNAME
@@ -1,3 +1,4 @@
+x509.io
+www.x509.io
 understandingwebpki.com
 www.understandingwebpki.com
-certs.peculiarventures.com