diff --git a/README.md b/README.md
index 0c69ec6..23b49b9 100644
--- a/README.md
+++ b/README.md
@@ -39,9 +39,11 @@ A curated Minecraft modpack about airships, exploration, and tech progression.
 
 ## Rebuilding the pack (maintainers)
 
-`python3 build_mrpack.py` regenerates the `.mrpack` from a live instance located at
-`~/.local/share/PrismLauncher/instances/Create Aeronautics - Airship & Expansion/.minecraft`.
-Set `MODS_DIR` / `OVERRIDES` at the top of the script to point at a different instance.
+`python3 build_mrpack.py` regenerates the `.mrpack` from the dedicated
+**"Reaper's Sky - dev"** instance at
+`~/.local/share/PrismLauncher/instances/Reaper's Sky - dev/.minecraft`.
+Set `INSTANCE` (and `OVERRIDES`) at the top of the script to point at a different
+instance.
 
 ## Known limitations