diff --git a/murano_tempest_tests/services/application_catalog/application_catalog_client.py b/murano_tempest_tests/services/application_catalog/application_catalog_client.py
index fe73b96..61f7fea 100644
--- a/murano_tempest_tests/services/application_catalog/application_catalog_client.py
+++ b/murano_tempest_tests/services/application_catalog/application_catalog_client.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import json
 import os
 
+from oslo_serialization import jsonutils as json
+
 import requests
 from tempest import config
 from tempest.lib.common import rest_client
diff --git a/murano_tempest_tests/services/artifacts/artifacts_client.py b/murano_tempest_tests/services/artifacts/artifacts_client.py
index 789497b..dde6e29 100644
--- a/murano_tempest_tests/services/artifacts/artifacts_client.py
+++ b/murano_tempest_tests/services/artifacts/artifacts_client.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import json
 import os
 
+from oslo_serialization import jsonutils as json
+
 from tempest import config
 from tempest.lib.common import rest_client
 
diff --git a/murano_tempest_tests/services/service_broker/service_broker_client.py b/murano_tempest_tests/services/service_broker/service_broker_client.py
index db04c5f..397763b 100644
--- a/murano_tempest_tests/services/service_broker/service_broker_client.py
+++ b/murano_tempest_tests/services/service_broker/service_broker_client.py
@@ -14,7 +14,8 @@
 #    under the License.
 
 import base64
-import json
+
+from oslo_serialization import jsonutils as json
 
 from tempest import config
 from tempest.lib.common import rest_client
diff --git a/murano_tempest_tests/tests/api/service_broker/base.py b/murano_tempest_tests/tests/api/service_broker/base.py
index faa63ca..a59c10b 100644
--- a/murano_tempest_tests/tests/api/service_broker/base.py
+++ b/murano_tempest_tests/tests/api/service_broker/base.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import json
 import time
 
+from oslo_serialization import jsonutils as json
+
 from tempest.common import credentials_factory as common_creds
 from tempest import config
 from tempest.lib import exceptions
diff --git a/murano_tempest_tests/tests/api/service_broker/test_service_broker_actions.py b/murano_tempest_tests/tests/api/service_broker/test_service_broker_actions.py
index 6a22fe4..efc517e 100644
--- a/murano_tempest_tests/tests/api/service_broker/test_service_broker_actions.py
+++ b/murano_tempest_tests/tests/api/service_broker/test_service_broker_actions.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import json
 import os
 
+from oslo_serialization import jsonutils as json
+
 from tempest.lib import decorators
 
 from murano_tempest_tests.tests.api.service_broker import base
diff --git a/murano_tempest_tests/tests/functional/common/utils.py b/murano_tempest_tests/tests/functional/common/utils.py
index 487be0d..8460b1e 100644
--- a/murano_tempest_tests/tests/functional/common/utils.py
+++ b/murano_tempest_tests/tests/functional/common/utils.py
@@ -14,7 +14,6 @@
 
 import collections
 import contextlib
-import json
 import os
 import random
 import socket
@@ -28,6 +27,7 @@ from muranoclient import client as mclient
 import muranoclient.common.exceptions as exceptions
 from muranoclient.glance import client as glare_client
 from oslo_log import log as logging
+from oslo_serialization import jsonutils as json
 from tempest import config
 import yaml