diff --git a/maintenance.md b/maintenance.md
index b43c0a3..c391b5c 100644
--- a/maintenance.md
+++ b/maintenance.md
@@ -10,3 +10,4 @@ Newest entries at the bottom.
 - 2026-09-05: Water recycling filters replaced.
 - 2026-09-05: Antenna realigned.
 - 2026-09-06: Fuel lines checked for leaks.
+- 2026-09-07: Solar panels cleaned.