diff --git a/README.md b/README.md
index 7b75fb5..4c14c96 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,10 @@ sudo systemctl start prometheus-node-exporter
 
 Installing a collector for the metrics now available on `:9100` is left as an exercise for the reader, but I figure if you're devoted to tracking system metrics enough to try and install prometheus on your Steam Deck you've probably already got a setup for that.
 
+## Future Incompatabilities
+
+If and when SteamOS is "rebased" onto a newer version of Arch (that is, the `VERSION_ID` in `/etc/os-release` is incremented), you'll need to update the `VERSION_ID` in `/var/lib/extensions/prometheus-node-exporter/usr/lib/extension-release.d/extension-release.prometheus-node-exporter` to match.
+
 ## References
 
 * <https://tailscale.com/blog/steam-deck/>