diff --git a/maintenance.md b/maintenance.md
index 8440b01..cfb00de 100644
--- a/maintenance.md
+++ b/maintenance.md
@@ -14,3 +14,4 @@ Newest entries at the bottom.
 - 2026-09-07: Coffee machine descaled.
 - 2026-09-07: Hull inspection, no leaks.
 - 2026-09-09: Antenna realigned.
+- 2026-09-09: Solar panels cleaned.