diff --git a/youtube-dl-server.subdomain.conf.sample b/youtube-dl-server.subdomain.conf.sample
index e2283fb..a3fe161 100644
--- a/youtube-dl-server.subdomain.conf.sample
+++ b/youtube-dl-server.subdomain.conf.sample
@@ -1,3 +1,4 @@
+## Version 2020/12/09
 # make sure that your dns has a cname set for youtube-dl-server and that your youtube-dl-server container is not using a base url
 
 server {