diff --git a/etc/caddy/Caddyfile b/etc/caddy/Caddyfile
index e39882d..d668488 100644
--- a/etc/caddy/Caddyfile
+++ b/etc/caddy/Caddyfile
@@ -1,8 +1,3 @@
-{
-	admin 0.0.0.0:2019
-	acme_ca https://acme.zerossl.com/v2/DV90
-	email kou029w@gmail.com
-}
 keiu.net {
 	file_server
 	reverse_proxy /dns-query https://dns {
diff --git a/etc/coredns/Corefile b/etc/coredns/Corefile
index ae514c6..93676c3 100644
--- a/etc/coredns/Corefile
+++ b/etc/coredns/Corefile
@@ -1,5 +1,5 @@
 https://. tls://. . {
-	tls /var/lib/caddy/data/caddy/certificates/acme.zerossl.com-v2-dv90/keiu.net/keiu.net.crt /var/lib/caddy/data/caddy/certificates/acme.zerossl.com-v2-dv90/keiu.net/keiu.net.key
+	tls /var/lib/caddy/data/caddy/certificates/acme-v02.api.letsencrypt.org-directory/keiu.net/keiu.net.crt /var/lib/caddy/data/caddy/certificates/acme-v02.api.letsencrypt.org-directory/keiu.net/keiu.net.key
 	reload
 	prometheus 0.0.0.0:9153
 	hosts {