diff --git a/maintenance.md b/maintenance.md
index fb44431..fe260b2 100644
--- a/maintenance.md
+++ b/maintenance.md
@@ -58,3 +58,4 @@ Newest entries at the bottom.
 - 2026-10-11: Cabin pressure sensors tested.
 - 2026-10-11: Antenna realigned.
 - 2026-10-12: Thrusters test-fired.
+- 2026-10-13: Fuel lines checked for leaks.