diff --git a/manila/api/views/limits.py b/manila/api/views/limits.py
index 6b9995acb2..d589b8989d 100644
--- a/manila/api/views/limits.py
+++ b/manila/api/views/limits.py
@@ -102,8 +102,9 @@ class ViewBuilder(common.ViewBuilder):
         return limits
 
     def _build_rate_limit(self, rate_limit):
-        _get_utc = datetime.datetime.utcfromtimestamp
-        next_avail = _get_utc(rate_limit["resetTime"])
+        next_avail = datetime.datetime.fromtimestamp(
+            rate_limit["resetTime"],
+            tz=datetime.timezone.utc).replace(tzinfo=None)
         return {
             "verb": rate_limit["verb"],
             "value": rate_limit["value"],
diff --git a/manila/share/drivers/netapp/dataontap/cluster_mode/lib_base.py b/manila/share/drivers/netapp/dataontap/cluster_mode/lib_base.py
index dfc3c5de56..99589713fa 100644
--- a/manila/share/drivers/netapp/dataontap/cluster_mode/lib_base.py
+++ b/manila/share/drivers/netapp/dataontap/cluster_mode/lib_base.py
@@ -2882,7 +2882,9 @@ class NetAppCmodeFileStorageLibrary(object):
         # than twice the replication schedule.
         if (last_update_timestamp and
             (timeutils.is_older_than(
-                datetime.datetime.utcfromtimestamp(last_update_timestamp)
+                datetime.datetime.fromtimestamp(
+                    last_update_timestamp,
+                    tz=datetime.timezone.utc).replace(tzinfo=None)
                 .isoformat(), (2 * self._snapmirror_schedule)))):
             return constants.REPLICA_STATE_OUT_OF_SYNC
 
diff --git a/manila/tests/message/test_api.py b/manila/tests/message/test_api.py
index 7ea0182a90..bc94ca0f27 100644
--- a/manila/tests/message/test_api.py
+++ b/manila/tests/message/test_api.py
@@ -37,7 +37,7 @@ class MessageApiTest(test.TestCase):
     @mock.patch.object(timeutils, 'utcnow')
     def test_create(self, mock_utcnow):
         CONF.set_override('message_ttl', 300)
-        now = datetime.datetime.utcnow()
+        now = datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
         mock_utcnow.return_value = now
         expected_expires_at = now + datetime.timedelta(
             seconds=300)
diff --git a/manila/tests/share/test_api.py b/manila/tests/share/test_api.py
index f7ea02f3e1..d664051bfc 100644
--- a/manila/tests/share/test_api.py
+++ b/manila/tests/share/test_api.py
@@ -120,7 +120,7 @@ class ShareAPITestCase(test.TestCase):
         self.mock_object(quota.QUOTAS, 'reserve',
                          lambda *args, **kwargs: None)
 
-        self.dt_utc = datetime.datetime.utcnow()
+        self.dt_utc = timeutils.utcnow()
         self.mock_object(timeutils, 'utcnow',
                          mock.Mock(return_value=self.dt_utc))
         self.mock_object(share_api.policy, 'check_policy')
diff --git a/manila/tests/share_group/test_api.py b/manila/tests/share_group/test_api.py
index 48e18c15ec..c73c87aabf 100644
--- a/manila/tests/share_group/test_api.py
+++ b/manila/tests/share_group/test_api.py
@@ -93,7 +93,7 @@ class ShareGroupsAPITestCase(test.TestCase):
         self.mock_object(self.api, 'share_api', self.share_api)
         self.mock_object(self.api, 'scheduler_rpcapi', self.scheduler_rpcapi)
 
-        dt_utc = datetime.datetime.utcnow()
+        dt_utc = timeutils.utcnow()
         self.mock_object(timeutils, 'utcnow', mock.Mock(return_value=dt_utc))
         self.fake_share_type = {
             'name': 'default',
diff --git a/manila/tests/test_service.py b/manila/tests/test_service.py
index 09031da87a..b47189daa0 100644
--- a/manila/tests/test_service.py
+++ b/manila/tests/test_service.py
@@ -21,13 +21,13 @@
 Unit Tests for remote procedure calls using queue
 """
 
-from datetime import datetime
 from datetime import timedelta
 from unittest import mock
 
 import ddt
 from oslo_config import cfg
 from oslo_service import wsgi
+from oslo_utils import timeutils
 
 from manila import context
 from manila import db
@@ -300,9 +300,9 @@ class ServiceTestCase(test.TestCase):
 
             if cleanup_interval_done:
                 service_ref_stopped['updated_at'] = (
-                    datetime.utcnow() - timedelta(minutes=10))
+                    timeutils.utcnow() - timedelta(minutes=10))
             else:
-                service_ref_stopped['updated_at'] = datetime.utcnow()
+                service_ref_stopped['updated_at'] = timeutils.utcnow()
             mock_db.service_get_all_by_topic.return_value = [
                 service_ref_stopped]
             serv.stop()
diff --git a/requirements.txt b/requirements.txt
index e0c5f83199..ba2038c668 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ oslo.rootwrap>=6.2.0 # Apache-2.0
 oslo.serialization>=4.0.1 # Apache-2.0
 oslo.service>=2.4.0 # Apache-2.0
 oslo.upgradecheck>=1.3.0 # Apache-2.0
-oslo.utils>=4.7.0 # Apache-2.0
+oslo.utils>=7.0.0 # Apache-2.0
 oslo.concurrency>=4.3.0 # Apache-2.0
 osprofiler>=3.4.0 # Apache-2.0
 paramiko>=2.7.2 # LGPLv2.1+