diff --git a/darwin/profiles/core/nix/nix.nix b/darwin/profiles/core/nix/nix.nix
index a200fe5..f39bbee 100755
--- a/darwin/profiles/core/nix/nix.nix
+++ b/darwin/profiles/core/nix/nix.nix
@@ -8,10 +8,9 @@
     substituters =
       {
         "Asia/Shanghai" = [
+          "https://mirror.sjtu.edu.cn/nix-channels/store" # SJTU - 上海交通大学 Mirror
           "https://mirrors.ustc.edu.cn/nix-channels/store" # USTC - 中国科学技术大学 Mirror
           "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store" # TUNA - 清华大学 Mirror
-          "https://mirrors.bfsu.edu.cn/nix-channels/store" # BFSU - 北京外国语大学 Mirror
-          "https://mirror.sjtu.edu.cn/nix-channels/store" # SJTU - 上海交通大学 Mirror
         ];
       }
       .${config.time.timeZone}
diff --git a/nixos/profiles/core/nix/nix.nix b/nixos/profiles/core/nix/nix.nix
index 37eb401..2e8865d 100755
--- a/nixos/profiles/core/nix/nix.nix
+++ b/nixos/profiles/core/nix/nix.nix
@@ -4,10 +4,9 @@
     substituters =
       {
         "Asia/Shanghai" = [
+          "https://mirror.sjtu.edu.cn/nix-channels/store" # SJTU - 上海交通大学 Mirror
           "https://mirrors.ustc.edu.cn/nix-channels/store" # USTC - 中国科学技术大学 Mirror
           "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store" # TUNA - 清华大学 Mirror
-          "https://mirrors.bfsu.edu.cn/nix-channels/store" # BFSU - 北京外国语大学 Mirror
-          "https://mirror.sjtu.edu.cn/nix-channels/store" # SJTU - 上海交通大学 Mirror
         ];
       }
       .${config.time.timeZone}