diff --git a/Formula/shadowsocks-libev.rb b/Formula/shadowsocks-libev.rb
index 7099d4b36e..2b2b8017ee 100644
--- a/Formula/shadowsocks-libev.rb
+++ b/Formula/shadowsocks-libev.rb
@@ -18,7 +18,6 @@ class ShadowsocksLibev < Formula
   depends_on "libsodium"
   depends_on "mbedtls"
   depends_on "pcre"
-  depends_on "udns"
 
   def install
     ENV["XML_CATALOG_FILES"] = etc/"xml/catalog"