diff --git a/doh-client/doh-client.conf b/doh-client/doh-client.conf
index 6bfb629..ec985ff 100644
--- a/doh-client/doh-client.conf
+++ b/doh-client/doh-client.conf
@@ -18,9 +18,9 @@ upstream_selector = "random"
 
 # weight should in (0, 100], if upstream_selector is random, weight will be ignored
 
-## Google's productive resolver, good ECS, bad DNSSEC
-#[[upstream.upstream_google]]
-#    url = "https://dns.google.com/resolve"
+## Google's resolver, good ECS, good DNSSEC
+#[[upstream.upstream_ietf]]
+#    url = "https://dns.google/dns-query"
 #    weight = 50
 
 ## CloudFlare's resolver, bad ECS, good DNSSEC
@@ -48,11 +48,6 @@ upstream_selector = "random"
 #    url = "https://9.9.9.9/dns-query"
 #    weight = 50
 
-## Google's experimental resolver, good ECS, good DNSSEC
-#[[upstream.upstream_ietf]]
-#    url = "https://dns.google.com/experimental"
-#    weight = 50
-
 ## CloudFlare's resolver for Tor, available only with Tor
 ## Remember to disable ECS below when using Tor!
 ## Blog: https://blog.cloudflare.com/welcome-hidden-resolver/