diff --git a/docs/abra/upgrade.md b/docs/abra/upgrade.md
index c8b19cd..5614763 100644
--- a/docs/abra/upgrade.md
+++ b/docs/abra/upgrade.md
@@ -53,6 +53,11 @@ And test things work.
 
 > General release notes are [here](https://git.coopcloud.tech/toolshed/abra/releases/)
 
+### `0.10.x-beta` -> `WIP`
+
+* We know ensure that `$ABRA_DIR/servers` has stricter permissions (`0600`).
+  See [`#592`](https://git.coopcloud.tech/toolshed/abra/pulls/592) for more.
+
 ### `0.9.x-beta` -> `0.10.x-beta`
 
 * `abra` will now write the app deployment version to the app env file