diff --git a/README.md b/README.md
index 99425e5..929476a 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ Direction-vector helper composes 4 actions into `{x, y}` ∈ {-1, 0, +1}².
 
 - Lib-ID: `lib-core.input`
 - Version: `0.4.0`
+- Spec v0.4.0 (P.3.10): `meta/docs/superpowers/specs/2026-05-15-p3-housekeeping-design.md`
 - Spec v0.3.0 (P.3.3): `meta/docs/superpowers/specs/2026-05-12-p3-3-mouse-input-design.md`
 - Spec v0.2.0 (P.2.6): `meta/docs/superpowers/specs/2026-05-11-engine-input-symbolic-keys-design.md`
 - Spec v0.1.0 (P.0): `meta/docs/superpowers/specs/2026-05-09-p0-lib-input-design.md`
@@ -81,7 +82,7 @@ end
 
 ## v0.4.0 (P.3.10, 2026-05-15)
 - Added `was_action_released(action_name)` — release-edge detection per action.
-  Selection-Lib's `prev_click_down` workaround promoted.
+  Consumers can now detect key-up edges without per-frame state tracking.
 - Engine surface: `engine.input.was_released` + `was_mouse_released`.
 
 ## v0.3.0 (P.3.3, 2026-05-12)