diff --git a/maintainerr.subdomain.conf.sample b/maintainerr.subdomain.conf.sample
index c89d202..c4dad52 100644
--- a/maintainerr.subdomain.conf.sample
+++ b/maintainerr.subdomain.conf.sample
@@ -1,6 +1,7 @@
 ## Version 2024/10/27
 # make sure that your maintainerr container is named maintainerr
 # make sure that your dns has a cname set for maintainerr
+# maintainerr v2.0.0+ only
 
 server {
     listen 443 ssl;