diff --git a/rule/AdGuard/BlockHttpDNS/BlockHttpDNS.txt b/rule/AdGuard/BlockHttpDNS/BlockHttpDNS.txt
index 3692d3ad1af..974511826e1 100644
--- a/rule/AdGuard/BlockHttpDNS/BlockHttpDNS.txt
+++ b/rule/AdGuard/BlockHttpDNS/BlockHttpDNS.txt
@@ -14,7 +14,7 @@
 !！虽然使用SSL pinning是不建议的，但是显然部分应用不会听从Google的建议 [ref3]
 !！ref1: https://adguard.com/kb/zh-CN/adguard-for-android/solving-problems/https-certificate-for-rooted/
 !！ref2: https://modules.lsposed.org/module/io.github.tehcneko.sslunpinning/
-!! ref3: https://modules.lsposed.org/module/io.github.tehcneko.sslunpinning/
+!! ref3: https://developer.android.com/privacy-and-security/security-ssl?hl=zh-cn
 !! --------------------
 
 !! --------------------