diff --git a/docs/configuration/cheatsheet.md b/docs/configuration/cheatsheet.md
index a81bfa29d..ed9049a8d 100644
--- a/docs/configuration/cheatsheet.md
+++ b/docs/configuration/cheatsheet.md
@@ -69,6 +69,7 @@ You shouldn't edit the base config directly to avoid breakages and merge conflic
 * `account_field_name_length`: An account field name maximum length (default: `512`).
 * `account_field_value_length`: An account field value maximum length (default: `2048`).
 * `external_user_synchronization`: Enabling following/followers counters synchronization for external users.
+* `cleanup_attachments`: Remove attachments along with statuses. Does not affect duplicate files and attachments without status. Enabling this will increase load to database when deleting statuses on larger instances.
 
 ## Federation
 ### MRF policies