diff --git a/openspec/changes/code-review-fix/tasks.md b/openspec/changes/code-review-fix/tasks.md
index 3d6a335..64a749c 100644
--- a/openspec/changes/code-review-fix/tasks.md
+++ b/openspec/changes/code-review-fix/tasks.md
@@ -137,5 +137,5 @@
 
 - [x] 15.1 `[sonnet]` Replace `@app.on_event("startup")` with FastAPI lifespan pattern in `services/ml/app/main.py:307`
 - [x] 15.2 `[haiku]` Replace `declarative_base()` with `class Base(DeclarativeBase)` in `services/ml/app/db.py:45`
-- [ ] 15.3 `[haiku]` Replace all `datetime.utcnow()` with `datetime.now(datetime.UTC)` in `services/ml/app/main.py:325,1000,1019,1080`
+- [x] 15.3 `[haiku]` Replace all `datetime.utcnow()` with `datetime.now(datetime.UTC)` in `services/ml/app/main.py:325,1000,1019,1080`
 - [ ] 15.4 `[haiku]` Add missing fallback return for volume indicators in `features/talib_features.py:169-190`