diff --git a/spoolman/database/spool.py b/spoolman/database/spool.py
index 93c523f..efeacc4 100644
--- a/spoolman/database/spool.py
+++ b/spoolman/database/spool.py
@@ -1,6 +1,6 @@
 """Helper functions for interacting with spool database objects."""
 
-from datetime import datetime
+from datetime import UTC, datetime
 from typing import Optional
 
 import sqlalchemy
@@ -12,6 +12,11 @@ from spoolman.exceptions import ItemCreateError, ItemNotFoundError
 from spoolman.math import weight_from_length
 
 
+def utc_timezone_naive(dt: datetime) -> datetime:
+    """Convert a datetime object to UTC and remove timezone info."""
+    return dt.astimezone(UTC).replace(tzinfo=None)
+
+
 async def create(
     *,
     db: AsyncSession,
@@ -34,6 +39,12 @@ async def create(
         else:
             used_weight = 0
 
+    # Convert datetime values to UTC and remove timezone info
+    if first_used is not None:
+        first_used = utc_timezone_naive(first_used)
+    if last_used is not None:
+        last_used = utc_timezone_naive(last_used)
+
     db_item = models.Spool(
         filament=filament_item,
         used_weight=used_weight,
@@ -112,6 +123,8 @@ async def update(
             if spool.filament.weight is None:
                 raise ItemCreateError("remaining_weight can only be used if the filament type has a weight set.")
             spool.used_weight = max(spool.filament.weight - v, 0)
+        elif isinstance(v, datetime):
+            setattr(spool, k, utc_timezone_naive(v))
         else:
             setattr(spool, k, v)
     await db.flush()
diff --git a/tests_integration/docker-compose-cockroachdb.yml b/tests_integration/docker-compose-cockroachdb.yml
index 941724d..3483d55 100644
--- a/tests_integration/docker-compose-cockroachdb.yml
+++ b/tests_integration/docker-compose-cockroachdb.yml
@@ -25,7 +25,7 @@ services:
       - SPOOLMAN_DB_PORT=26257
       - SPOOLMAN_DB_NAME=spoolman
       - SPOOLMAN_DB_USERNAME=john
-      - SPOOLMAN_LOGGING_LEVEL=DEBUG
+      - SPOOLMAN_LOGGING_LEVEL=INFO
     depends_on:
       db:
         condition: service_healthy
diff --git a/tests_integration/docker-compose-mariadb.yml b/tests_integration/docker-compose-mariadb.yml
index 66afe87..bee7d8f 100644
--- a/tests_integration/docker-compose-mariadb.yml
+++ b/tests_integration/docker-compose-mariadb.yml
@@ -29,7 +29,7 @@ services:
       - SPOOLMAN_DB_NAME=spoolman
       - SPOOLMAN_DB_USERNAME=john
       - SPOOLMAN_DB_PASSWORD=abc
-      - SPOOLMAN_LOGGING_LEVEL=DEBUG
+      - SPOOLMAN_LOGGING_LEVEL=INFO
     depends_on:
       db:
         condition: service_healthy
diff --git a/tests_integration/docker-compose-postgres.yml b/tests_integration/docker-compose-postgres.yml
index 41ff68a..708dd52 100644
--- a/tests_integration/docker-compose-postgres.yml
+++ b/tests_integration/docker-compose-postgres.yml
@@ -13,7 +13,7 @@ services:
       - SPOOLMAN_DB_NAME=postgres
       - SPOOLMAN_DB_USERNAME=postgres
       - SPOOLMAN_DB_PASSWORD=abc
-      - SPOOLMAN_LOGGING_LEVEL=DEBUG
+      - SPOOLMAN_LOGGING_LEVEL=INFO
     depends_on:
       - db
   tester:
diff --git a/tests_integration/docker-compose-sqlite.yml b/tests_integration/docker-compose-sqlite.yml
index 072ba4e..a76eec5 100644
--- a/tests_integration/docker-compose-sqlite.yml
+++ b/tests_integration/docker-compose-sqlite.yml
@@ -3,7 +3,7 @@ services:
   spoolman:
     image: donkie/spoolman:test
     environment:
-      - SPOOLMAN_LOGGING_LEVEL=DEBUG
+      - SPOOLMAN_LOGGING_LEVEL=INFO
   tester:
     image: donkie/spoolman-tester:latest
     volumes:
diff --git a/tests_integration/tests/test_spool.py b/tests_integration/tests/test_spool.py
index 0725cfb..17cf882 100644
--- a/tests_integration/tests/test_spool.py
+++ b/tests_integration/tests/test_spool.py
@@ -12,8 +12,6 @@ URL = "http://spoolman:8000"
 def test_add_spool_remaining_weight(random_filament: dict[str, Any]):
     """Test adding a spool to the database."""
     # Execute
-    first_used = "2023-01-01T00:00:00"
-    last_used = "2023-01-02T00:00:00"
     remaining_weight = 750
     location = "The Pantry"
     lot_nr = "123456789"
@@ -21,8 +19,8 @@ def test_add_spool_remaining_weight(random_filament: dict[str, Any]):
     result = httpx.post(
         f"{URL}/api/v1/spool",
         json={
-            "first_used": first_used,
-            "last_used": last_used,
+            "first_used": "2023-01-02T12:00:00+01:00",
+            "last_used": "2023-01-02T11:00:00Z",
             "filament_id": random_filament["id"],
             "remaining_weight": remaining_weight,
             "location": location,
@@ -37,8 +35,8 @@ def test_add_spool_remaining_weight(random_filament: dict[str, Any]):
     assert spool == {
         "id": spool["id"],
         "registered": spool["registered"],
-        "first_used": first_used,
-        "last_used": last_used,
+        "first_used": "2023-01-02T11:00:00",
+        "last_used": "2023-01-02T11:00:00",
         "filament": random_filament,
         "remaining_weight": pytest.approx(remaining_weight),
         "used_weight": pytest.approx(random_filament["weight"] - remaining_weight),
@@ -362,8 +360,8 @@ def test_update_spool(random_filament: dict[str, Any]):
     spool = result.json()
 
     # Execute
-    first_used = "2023-01-01T00:00:00"
-    last_used = "2023-01-02T00:00:00"
+    first_used = "2023-01-01T12:00:00+02:00"
+    last_used = "2023-01-02T12:00:00+02:00"
     remaining_weight = 750
     location = "Living Room"
     lot_nr = "987654321"
@@ -383,8 +381,8 @@ def test_update_spool(random_filament: dict[str, Any]):
 
     # Verify
     spool = result.json()
-    assert spool["first_used"] == first_used
-    assert spool["last_used"] == last_used
+    assert spool["first_used"] == "2023-01-01T10:00:00"
+    assert spool["last_used"] == "2023-01-02T10:00:00"
     assert spool["remaining_weight"] == pytest.approx(remaining_weight)
     assert spool["used_weight"] == pytest.approx(random_filament["weight"] - remaining_weight)
     assert spool["location"] == location