diff --git a/gentoo_portage/repos.conf b/gentoo_portage/repos.conf
index 493c591..4cf1793 100644
--- a/gentoo_portage/repos.conf
+++ b/gentoo_portage/repos.conf
@@ -4,7 +4,11 @@ main-repo = gentoo
 [gentoo]
 location = /var/db/repos/gentoo
 sync-type = git
-sync-uri = https://mirrors.tuna.tsinghua.edu.cn/git/gentoo-portage.git
+# sync-uri = https://mirrors.tuna.tsinghua.edu.cn/git/gentoo-portage.git
+# 官方 ebuild 仓库，如果不用 eix 这个镜像最好
+# sync-uri = https://github.com/gentoo/gentoo.git
+# 官方 ebuild 仓库的镜像，并且带有 metadata 信息，对 eix 友好
+sync-uri = https://github.com/gentoo-mirror/gentoo.git
 # sync-type = rsync
 # sync-uri = rsync://rsync.gentoo.org/gentoo-portage
 # sync-uri = rsync://mirrors.tuna.tsinghua.edu.cn/gentoo-portage