diff --git a/repo/sing-box-git/PKGBUILD b/repo/sing-box-git/PKGBUILD
index 1a9f9fa..4a538eb 100644
--- a/repo/sing-box-git/PKGBUILD
+++ b/repo/sing-box-git/PKGBUILD
@@ -40,7 +40,7 @@ pkgver() {
     git describe --tags --long | sed -E 's/([^-]*-g)/r\1/;s/-/./g;s/^v//'
 }
 
-_tags=with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_clash_api,with_acme
+_tags=with_gvisor,with_quic,with_dhcp,with_wireguard,with_ech,with_utls,with_reality_server,with_acme,with_clash_api
 build() {
     cd "${srcdir}/${_pkgname}"