diff --git a/ccflow/context.py b/ccflow/context.py
index cf17d24..9a04fad 100644
--- a/ccflow/context.py
+++ b/ccflow/context.py
@@ -1,6 +1,5 @@
 """This module defines re-usable contexts for the "Callable Model" framework defined in flow.callable.py."""
 
-import warnings
 from datetime import date, datetime
 from typing import Generic, Hashable, Optional, Sequence, Set, TypeVar
 
@@ -11,9 +10,6 @@
 from .exttypes import Frequency
 from .validators import normalize_date, normalize_datetime
 
-warnings.simplefilter("always", DeprecationWarning)
-
-
 __all__ = (
     "NullContext",
     "GenericContext",
diff --git a/ccflow/tests/evaluators/util.py b/ccflow/tests/evaluators/util.py
index 10344a7..41bf684 100644
--- a/ccflow/tests/evaluators/util.py
+++ b/ccflow/tests/evaluators/util.py
@@ -1,5 +1,5 @@
 import logging
-from datetime import date, datetime
+from datetime import date, datetime, timezone
 from typing import Any, ClassVar, List, Optional
 
 import pandas as pd
@@ -36,7 +36,7 @@ class MyDateCallable(CallableModel):
 
     @Flow.call(volatile=True, validate_result=False)
     def current_time(self, context: DateContext):
-        out = datetime.utcnow()
+        out = datetime.now(timezone.utc)
         log.info("Current datetime: %s", out)
         return out
 
diff --git a/docs/wiki/Workflows.md b/docs/wiki/Workflows.md
index 4c56373..3d8c960 100644
--- a/docs/wiki/Workflows.md
+++ b/docs/wiki/Workflows.md
@@ -182,7 +182,7 @@ from ccflow import (
 print(DateContext(date=date.today()))
 print(DatetimeContext(dt=datetime.now()))
 print(DateRangeContext(start_date=date(2022, 1, 1), end_date=date(2023, 2, 2)))
-print(VersionedDateContext(date=date.today(), entry_time_cutoff=datetime.utcnow()))
+print(VersionedDateContext(date=date.today(), entry_time_cutoff=datetime.now(datetime.timezone.utc)))
 print(UniverseContext(universe="US"))
 print(UniverseDateContext(universe="US", date=date.today()))
 print(ModelDateContext(mode="MyModel", date=date.today()))