diff --git a/ironic_tempest_plugin/tests/scenario/introspection_manager.py b/ironic_tempest_plugin/tests/scenario/introspection_manager.py
index 21b9911..d39e0a7 100644
--- a/ironic_tempest_plugin/tests/scenario/introspection_manager.py
+++ b/ironic_tempest_plugin/tests/scenario/introspection_manager.py
@@ -10,10 +10,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import json
 import os
 import time
 
+from oslo_serialization import jsonutils as json
+
 import six
 import tempest
 from tempest import config