diff --git a/docs/nixos-with-flakes/add-custom-cache-servers.md b/docs/nixos-with-flakes/add-custom-cache-servers.md
index d6b67a3..f38e0b2 100644
--- a/docs/nixos-with-flakes/add-custom-cache-servers.md
+++ b/docs/nixos-with-flakes/add-custom-cache-servers.md
@@ -157,7 +157,7 @@ According to the official documentation, if the value of the `xxx` parameter is
 
 In other words, you can use it like this:
 
-```nix{7,13,37-58}
+```nix{7,13,37-60}
 {
   description = "NixOS configuration of Ryan Yin";
 
diff --git a/docs/zh/nixos-with-flakes/add-custom-cache-servers.md b/docs/zh/nixos-with-flakes/add-custom-cache-servers.md
index b469e0d..26a800f 100644
--- a/docs/zh/nixos-with-flakes/add-custom-cache-servers.md
+++ b/docs/zh/nixos-with-flakes/add-custom-cache-servers.md
@@ -160,7 +160,7 @@ Nix 提供了 [`extra-` 前缀](https://nixos.org/manual/nix/stable/command-ref/
 
 也就是说我们可以这么用：
 
-```nix{7,13,37-58}
+```nix{7,13,37-60}
 {
   description = "NixOS configuration of Ryan Yin";