diff --git a/bootstrap/src/initnsmgr.rs b/bootstrap/src/initnsmgr.rs
index 2ef53b1a78..4d1443a9d5 100644
--- a/bootstrap/src/initnsmgr.rs
+++ b/bootstrap/src/initnsmgr.rs
@@ -15,7 +15,7 @@ use redox_rt::proc::FdGuard;
 // single-threaded Rc<RefCell>. NOTE: this Mutex is a spinlock -- never hold it
 // across a blocking syscall; resolve the cap_fd under the lock, clone the Arc,
 // and do the blocking openat with the lock released. See
-// local/docs/INITNSMGR-CONCURRENCY-DESIGN.md.
+// local/docs/legacy-obsolete-2026-07-25/INITNSMGR-CONCURRENCY-DESIGN.md.
 use redox_rt::sync::Mutex;
 use redox_scheme::{
     CallerCtx, Id, IntoTag, OpenResult, RequestKind, Response, SendFdRequest, SignalBehavior,