diff --git a/maintenance.md b/maintenance.md
index c391b5c..c05afae 100644
--- a/maintenance.md
+++ b/maintenance.md
@@ -11,3 +11,4 @@ Newest entries at the bottom.
 - 2026-09-05: Antenna realigned.
 - 2026-09-06: Fuel lines checked for leaks.
 - 2026-09-07: Solar panels cleaned.
+- 2026-09-07: Coffee machine descaled.