diff --git a/book/src/user-guide/README.md b/book/src/user-guide/README.md
index 8ce8720..ca98720 100644
--- a/book/src/user-guide/README.md
+++ b/book/src/user-guide/README.md
@@ -24,6 +24,10 @@ To configure Nix to automatically use cache `foo`:
 attic use foo
 ```
 
+## Disabling a cache
+
+To configure Nix to no longer use a cache, remove the corresponding entries from the list of `substituters` and `trusted-public-keys` in `~/.config/nix/nix.conf`
+
 ## Pushing to the cache
 
 To push a store path to cache `foo`: