diff --git a/.Pipelines/template-pipeline-stages.yml b/.Pipelines/template-pipeline-stages.yml
index b763f01a..0b6b9742 100644
--- a/.Pipelines/template-pipeline-stages.yml
+++ b/.Pipelines/template-pipeline-stages.yml
@@ -121,16 +121,15 @@ stages:
           --benchmark-skip \
           --timeout=120 \
           --junitxml=test-results/junit-unit.xml \
+          --log-file=test-results/pytest-unit.log \
           --ignore=tests/test_e2e.py \
           --ignore=tests/test_e2e_manual.py \
           --ignore=tests/test_fmi_e2e.py \
           --deselect tests/test_cryptography.py::CryptographyTestCase::test_ceiling_should_be_latest_cryptography_version_plus_three \
-          --deselect tests/test_cryptography.py::CryptographyTestCase::test_should_be_run_with_latest_version_of_cryptography \
-          2>&1 | tee test-results/pytest-unit.log
+          --deselect tests/test_cryptography.py::CryptographyTestCase::test_should_be_run_with_latest_version_of_cryptography
       displayName: 'Run pytest (unit)'
       timeoutInMinutes: 5
       env:
-        # Force unbuffered stdout so ADO logs stream in real time through the tee pipe.
         PYTHONUNBUFFERED: '1'
 
     # Run cryptography version-gating tests separately as a warning-only check.
diff --git a/msal/wstrust_request.py b/msal/wstrust_request.py
index 159375f3..56b0b82d 100644
--- a/msal/wstrust_request.py
+++ b/msal/wstrust_request.py
@@ -26,7 +26,7 @@
 #------------------------------------------------------------------------------
 
 import uuid
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 import logging
 
 from .mex import Mex
@@ -76,7 +76,7 @@ def wsu_time_format(datetime_obj):
 
 
 def _build_rst(username, password, cloud_audience_urn, endpoint_address, soap_action):
-    now = datetime.utcnow()
+    now = datetime.now(timezone.utc)
     return """<s:Envelope xmlns:s='{s}' xmlns:wsa='{wsa}' xmlns:wsu='{wsu}'>
         <s:Header>
             <wsa:Action s:mustUnderstand='1'>{soap_action}</wsa:Action>