diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 34e2446..2f4e3a1 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -21,7 +21,7 @@ Getting the Jetson to see the hardware at all.
 - [x] SIM7600 LTE data path: QMI (self-built `qmi_wwan`), povo, metered, ranked
       below Ethernet/WiFi; failover tested, Tailscale stays reachable over LTE
 - [x] SIM7600 GNSS via gpsd (`/dev/sim7600-gps`): 3D fix in the car
-- [x] Kernel-update procedure for the out-of-tree modules (`pcan`, `qmi_wwan`) —
+- [x] Kernel-update procedure for the out-of-tree modules (`pcan`, `qmi_wwan`, `pl2303`) —
       documented, sources kept in `~/infra`; still manual, and breaks silently
       if forgotten
 - [x] Network time pinned to NICT; timezone `Asia/Tokyo`