diff --git a/src/dashboard/models/calm.py b/src/dashboard/models/calm.py
index 3b85446..403235c 100644
--- a/src/dashboard/models/calm.py
+++ b/src/dashboard/models/calm.py
@@ -1,4 +1,4 @@
-from datetime import date, datetime
+from datetime import UTC, date, datetime
 from enum import StrEnum
 
 from sqlalchemy import JSON, Boolean, Column, Date, DateTime, Index, Integer, String
@@ -40,8 +40,13 @@ class Task(Base):
     deferred_at = Column(DateTime, nullable=True)
 
     # Timestamps
-    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
-    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+    created_at = Column(DateTime, default=lambda: datetime.now(UTC), nullable=False)
+    updated_at = Column(
+        DateTime,
+        default=lambda: datetime.now(UTC),
+        onupdate=lambda: datetime.now(UTC),
+        nullable=False,
+    )
 
     __table_args__ = (Index("ix_task_state_order", "state", "sort_order"),)
 
@@ -59,4 +64,4 @@ class JournalEntry(Base):
     gratitude = Column(String(500), nullable=True)
     energy_level = Column(Integer, nullable=True)  # User-reported, 1-10
 
-    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
+    created_at = Column(DateTime, default=lambda: datetime.now(UTC), nullable=False)
diff --git a/src/dashboard/routes/tasks.py b/src/dashboard/routes/tasks.py
index 027d049..93669b5 100644
--- a/src/dashboard/routes/tasks.py
+++ b/src/dashboard/routes/tasks.py
@@ -5,7 +5,7 @@ import sqlite3
 import uuid
 from collections.abc import Generator
 from contextlib import closing, contextmanager
-from datetime import datetime
+from datetime import UTC, datetime
 from pathlib import Path
 
 from fastapi import APIRouter, Form, HTTPException, Request
@@ -219,7 +219,7 @@ async def create_task_form(
         raise HTTPException(status_code=400, detail="Task title cannot be empty")
 
     task_id = str(uuid.uuid4())
-    now = datetime.utcnow().isoformat()
+    now = datetime.now(UTC).isoformat()
     priority = priority if priority in VALID_PRIORITIES else "normal"
 
     with _get_db() as db:
@@ -287,7 +287,7 @@ async def modify_task(
 async def _set_status(request: Request, task_id: str, new_status: str):
     """Helper to update status and return refreshed task card."""
     completed_at = (
-        datetime.utcnow().isoformat() if new_status in ("completed", "vetoed", "failed") else None
+        datetime.now(UTC).isoformat() if new_status in ("completed", "vetoed", "failed") else None
     )
     with _get_db() as db:
         db.execute(
@@ -316,7 +316,7 @@ async def api_create_task(request: Request):
         raise HTTPException(422, "title is required")
 
     task_id = str(uuid.uuid4())
-    now = datetime.utcnow().isoformat()
+    now = datetime.now(UTC).isoformat()
     priority = body.get("priority", "normal")
     if priority not in VALID_PRIORITIES:
         priority = "normal"
@@ -358,7 +358,7 @@ async def api_update_status(task_id: str, request: Request):
         raise HTTPException(422, f"Invalid status. Must be one of: {VALID_STATUSES}")
 
     completed_at = (
-        datetime.utcnow().isoformat() if new_status in ("completed", "vetoed", "failed") else None
+        datetime.now(UTC).isoformat() if new_status in ("completed", "vetoed", "failed") else None
     )
     with _get_db() as db:
         db.execute(
diff --git a/src/dashboard/routes/work_orders.py b/src/dashboard/routes/work_orders.py
index c400acd..5d489f4 100644
--- a/src/dashboard/routes/work_orders.py
+++ b/src/dashboard/routes/work_orders.py
@@ -5,7 +5,7 @@ import sqlite3
 import uuid
 from collections.abc import Generator
 from contextlib import closing, contextmanager
-from datetime import datetime
+from datetime import UTC, datetime
 from pathlib import Path
 
 from fastapi import APIRouter, Form, HTTPException, Request
@@ -144,7 +144,7 @@ async def submit_work_order(
     related_files: str = Form(""),
 ):
     wo_id = str(uuid.uuid4())
-    now = datetime.utcnow().isoformat()
+    now = datetime.now(UTC).isoformat()
     priority = priority if priority in PRIORITIES else "medium"
     category = category if category in CATEGORIES else "suggestion"
 
@@ -211,7 +211,7 @@ async def active_partial(request: Request):
 
 async def _update_status(request: Request, wo_id: str, new_status: str, **extra):
     completed_at = (
-        datetime.utcnow().isoformat() if new_status in ("completed", "rejected") else None
+        datetime.now(UTC).isoformat() if new_status in ("completed", "rejected") else None
     )
     with _get_db() as db:
         sets = ["status=?", "completed_at=COALESCE(?, completed_at)"]
diff --git a/src/timmy/mcp_tools.py b/src/timmy/mcp_tools.py
index 3971406..50b78e6 100644
--- a/src/timmy/mcp_tools.py
+++ b/src/timmy/mcp_tools.py
@@ -30,7 +30,7 @@ import shutil
 import sqlite3
 import uuid
 from contextlib import closing
-from datetime import datetime
+from datetime import UTC, datetime
 from pathlib import Path
 
 import httpx
@@ -196,7 +196,7 @@ def _bridge_to_work_order(title: str, body: str, category: str) -> None:
                     body,
                     category,
                     "timmy-thinking",
-                    datetime.utcnow().isoformat(),
+                    datetime.now(UTC).isoformat(),
                 ),
             )
             conn.commit()