diff --git a/03-DESIGN/01-to-be/42-milestones/zfs-owns-zfs-lead-answers.md b/03-DESIGN/01-to-be/42-milestones/zfs-owns-zfs-lead-answers.md
index c9a14463..60c161d8 100644
--- a/03-DESIGN/01-to-be/42-milestones/zfs-owns-zfs-lead-answers.md
+++ b/03-DESIGN/01-to-be/42-milestones/zfs-owns-zfs-lead-answers.md
@@ -176,3 +176,6 @@ settles it (`00-META/principles.md`), cited as "design 42 zfs-owns-zfs A-n". The
   for it (and for `bus-state-calls` and `ledger-calls`, the calls it already makes), so the delivery plan places the
   zfs module's new version only on a machine whose tool runner answers the call, and never one where its events would
   fail.
+- **A-45** (§13, review round 3; ADR 0240; principle 3) Each long-running unit the module declares (the services
+  `import-cache`, `mount`, `target` and `zed-on`) declares its health of kind `unit`, as the catalog's other
+  long-running resources do, so no running part of the module goes unwatched.