diff --git a/README.md b/README.md
index 3c9f857..d0c9ecd 100755
--- a/README.md
+++ b/README.md
@@ -64,9 +64,9 @@ Config: [HERE for more details](https://github.com/ookangzheng/blahdns/tree/mast
 ## Server architecture
 
 ```bash
-Server (May 3, 2020 -- Germany, Japan, Finland, Singapore)
+Server (Germany, Japan, Finland, Singapore)
 |-- Let's Encrypt SSL
-|-- Knot-resolver (OpenNIC, ICANN)
+|-- Knot-resolver (OpenNIC, ICANN, Yggdrasil, ETH)
 |   |-- DNSCryptv2 (dnsdist, port 8443)
 |   |-- doh-server (DoH, GET, POST -- m13253)
 |   |-- |-- DoH (HAProxy, port 443, TLS 1.3, require SNI)