diff --git a/docs/index.md b/docs/index.md
index a71a22d1..26fe5969 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -554,6 +554,9 @@ Use "helmfile [command] --help" for more information about a command.
 
 The `helmfile init` sub-command checks the dependencies required for helmfile operation, such as `helm`, `helm diff plugin`, `helm secrets plugin`, `helm helm-git plugin`, `helm s3 plugin`. When it does not exist or the version is too low, it can be installed automatically.
 
+### cache
+
+The `helmfile cache` sub-command is designed for cache management. Go-getter-backed remote file system are cached by `helmfile`. There is no TTL implemented, if you need to update the cached files or directories, you need to clean individually or run a full cleanup with `helmfile cache cleanup`
 
 ### sync