diff --git a/README.md b/README.md
index 767eb6bf..1de4db86 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,8 @@ A not-so-up-to-date-list-that-may-be-actually-current:
 * https://github.com/fortio/dnsping
 * https://github.com/Luzilla/dnsbl_exporter
 * https://github.com/bodgit/tsig
+* https://github.com/v2fly/v2ray-core (test only)
+
 
 Send pull request if you want to be listed here.