diff --git a/README.md b/README.md
index 1dd6fd4..2814e93 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Early. See the milestone table in the implementation plan.
 | M2 | Prove the native module chain (`better-sqlite3`, later `node-pty` / `serialport`) | folded into M1/M8 |
 | M3 | Connection tree UI | done |
 | M4 | SSH connect + terminal | done |
-| M5 | Tabs and same-host grouping | partly — tabs exist, grouping does not |
+| M5 | Tabs and same-host grouping | done |
 | M6 | Flow control and reconnect resilience | done |
 | M7 | Port forwarding (`-L` / `-R` / `-D`) | |
 | M8 | Local terminal + serial | local terminal done, serial not |