diff --git a/tempest/services/baremetal/base.py b/tempest/services/baremetal/base.py
index 1461198..2ac3fb2 100644
--- a/tempest/services/baremetal/base.py
+++ b/tempest/services/baremetal/base.py
@@ -11,8 +11,8 @@
 #    under the License.
 
 import functools
-import json
 
+from oslo_serialization import jsonutils as json
 import six
 from six.moves.urllib import parse as urllib