diff --git a/flake.nix b/flake.nix
index d0ebaca..e909582 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,12 +1,16 @@
-{
+{lib}:{
   nixConfig = rec {
     experimental-features = [ "nix-command" "flakes" ];
 
-    substituters = [
+    substituters = lib.mkForce [
       # Replace official cache with a mirror located in China
       #
       # Feel free to remove this line if you are not in China
       "https://mirrors.ustc.edu.cn/nix-channels/store"
+      "https://mirrors.ustc.edu.cn/nix-channels/store" # 中科大
+      "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store" #清华
+      "https://mirrors.bfsu.edu.cn/nix-channels/store" # 北外
+      "https://mirror.sjtu.edu.cn/nix-channels/store" #交大
       #"https://cache.nixos.org"
     ];
     trusted-substituters = substituters;