1 files changed, 14 insertions, 0 deletions
diff --git a/docs/usage/configuration/config_documentation.md b/docs/usage/configuration/config_documentation.md
index c32608da2b..2987c9332d 100644
--- a/docs/usage/configuration/config_documentation.md
+++ b/docs/usage/configuration/config_documentation.md
@@ -2849,6 +2849,20 @@ Example configuration:
 track_appservice_user_ips: true
 ```
 ---
+### `use_appservice_legacy_authorization`
+
+Whether to send the application service access tokens via the `access_token` query parameter
+per older versions of the Matrix specification. Defaults to false. Set to true to enable sending
+access tokens via a query parameter.
+
+**Enabling this option is considered insecure and is not recommended. **
+
+Example configuration:
+```yaml
+use_appservice_legacy_authorization: true 
+```
+
+---
 ### `macaroon_secret_key`
 
 A secret which is used to sign