diff --git a/README.md b/README.md
index 9486b767..f1ee6ef1 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,6 @@ Translators can go to [POEditor](https://poeditor.com/join/project/u5VHO9vhSf) t
     <li>overture: <a href="https://github.com/shawn1m/overture/blob/master/LICENSE">MIT</a></li>
     <li>libev: <a href="https://github.com/shadowsocks/libev/blob/master/LICENSE">GPLv2</a></li>
     <li>libsodium: <a href="https://github.com/jedisct1/libsodium/blob/master/LICENSE">ISC</a></li>
-    <li>libudns: <a href="https://github.com/shadowsocks/libudns/blob/master/COPYING.LGPL">LGPL</a></li>
 </ul>
 
 ### LICENSE
diff --git a/mobile/src/main/assets/pages/about.html b/mobile/src/main/assets/pages/about.html
index 5020f9ef..8cb0b6ee 100644
--- a/mobile/src/main/assets/pages/about.html
+++ b/mobile/src/main/assets/pages/about.html
@@ -299,7 +299,6 @@ along with this program. If not, see <a href="http://www.gnu.org/licenses/">http
     <li>overture: <a href="https://github.com/shawn1m/overture/blob/master/LICENSE">MIT</a></li>
     <li>libev: <a href="https://github.com/shadowsocks/libev/blob/master/LICENSE">GPLv2</a></li>
     <li>libsodium: <a href="https://github.com/jedisct1/libsodium/blob/master/LICENSE">ISC</a></li>
-    <li>libudns: <a href="https://github.com/shadowsocks/libudns/blob/master/COPYING.LGPL">LGPL</a></li>
 </ul>
 
 </body>