diff --git a/flake.nix b/flake.nix
index 9b9ef88..d0ebaca 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,7 @@
       #
       # Feel free to remove this line if you are not in China
       "https://mirrors.ustc.edu.cn/nix-channels/store"
-      "https://cache.nixos.org"
+      #"https://cache.nixos.org"
     ];
     trusted-substituters = substituters;
     trusted-users =  [