diff --git a/docs/work/conformance-system-v1/04-ci-drift-gate/_story.md b/docs/work/conformance-system-v1/04-ci-drift-gate/_story.md
index 03ba9c8..64adff9 100644
--- a/docs/work/conformance-system-v1/04-ci-drift-gate/_story.md
+++ b/docs/work/conformance-system-v1/04-ci-drift-gate/_story.md
@@ -3,7 +3,7 @@ id: 04-ci-drift-gate
 epic: conformance-system-v1
 title: CI drift gate — pnpm conformance with cross-feature event closure
 type: technical-story
-status: in-progress
+status: done
 feature: scripts
 depends-on: [03-b-ast-eslint-rules]
 blocks: [05-generator-updates]
@@ -39,9 +39,9 @@ silent until the broken handler is exercised in prod.
   events are intentionally "fire and forget"; not a closure violation
 
 ## Tasks
-- [ ] Story scaffold
-- [ ] `scripts/conformance.mjs` implementation
-- [ ] Tests for the script
-- [ ] Wire into root package.json + turbo.json
-- [ ] Wire into ci.yml
-- [ ] Final verification + closeout
+- [x] Story scaffold
+- [x] `scripts/conformance.mjs` implementation
+- [x] Tests for the script
+- [x] Wire into root package.json + turbo.json
+- [x] Wire into ci.yml
+- [x] Final verification + closeout
diff --git a/docs/work/conformance-system-v1/_epic.md b/docs/work/conformance-system-v1/_epic.md
index ff74758..4edaa4d 100644
--- a/docs/work/conformance-system-v1/_epic.md
+++ b/docs/work/conformance-system-v1/_epic.md
@@ -35,7 +35,7 @@ See `docs/architecture/feature-conformance-explainer.html` and
 - [x] 03 — AST-aware ESLint rules (both halves shipped)
   - [x] [03.a — Structural rules](03-a-structural-eslint-rules/_story.md)
   - [x] [03.b — Manifest-aware AST rules](03-b-ast-eslint-rules/_story.md)
-- [ ] 04 — CI drift gate (later plan)
+- [x] [04 — CI drift gate](04-ci-drift-gate/_story.md)
 - [ ] 05 — Generator emits manifest + contracts + test stubs (later plan)
 - [ ] 06 — Documentation rewrite (later plan)
 - [ ] 07 — Migrate auth feature reference (later plan)