diff --git a/maintenance.md b/maintenance.md
index 368da20..1d22ac6 100644
--- a/maintenance.md
+++ b/maintenance.md
@@ -47,3 +47,4 @@ Newest entries at the bottom.
 - 2026-10-05: Hull inspection, no leaks.
 - 2026-10-06: Water recycling filters replaced.
 - 2026-10-06: Debugging duck accounted for.
+- 2026-10-07: Oxygen scrubbers replaced.