diff --git a/TASKS.md b/TASKS.md
index a5ae05e..e0aac72 100644
--- a/TASKS.md
+++ b/TASKS.md
@@ -135,7 +135,8 @@ Per-component lines live in `tasks/`. Tags there:
 - [x] T39a Theme · Editing — `tasks/ch31-43.md`
 - [x] T39b Theme · Importing — `tasks/ch31-43.md`
 - [x] T39c Theme · Platform — `tasks/ch31-43.md`
-- [ ] T40 i18n & a11y
+- [ ] T40a i18n
+- [ ] T40b a11y
 - [ ] T41 Maps
 - [ ] T42 Misc
 - [ ] T43 Library Tooling
diff --git a/tasks/ch31-43.md b/tasks/ch31-43.md
index 7b17531..b3ffd1c 100644
--- a/tasks/ch31-43.md
+++ b/tasks/ch31-43.md
@@ -271,12 +271,15 @@
 - [x] VibrancyBackground / Acrylic → `shell::Vibrancy` in a window opened `WindowBackgroundAppearance::Blurred`
 - [ ] Mica — blocked: gpui 0.2.2's one blur, `Blurred`, is acrylic on Windows
 
-## T40 i18n & a11y — `src/i18n`
+## T40a i18n — `src/i18n`
 
 - [ ] I18nProvider
 - [ ] Trans / LocalizedText
 - [ ] LocaleNumber / LocaleDate
 - [ ] RTL layout — prove: mirrored stacks
+
+## T40b a11y — `src/i18n`
+
 - [ ] LiveRegion / Announcer — blocked: gpui 0.2.2 has no accessibility tree
 - [ ] SkipLink
 - [ ] AccessibleIcon — blocked: no accessibility tree