diff --git a/karborclient/common/apiclient/client.py b/karborclient/common/apiclient/client.py
index a36f191..5e02d23 100644
--- a/karborclient/common/apiclient/client.py
+++ b/karborclient/common/apiclient/client.py
@@ -25,14 +25,10 @@ OpenStack Client interface. Handles the REST calls and responses.
 # E0202: An attribute inherited from %s hide this method
 # pylint: disable=E0202
 
-try:
-    import simplejson as json
-except ImportError:
-    import json
-
 import time
 
 from oslo_log import log as logging
+from oslo_serialization import jsonutils
 from oslo_utils import importutils
 import requests
 
@@ -132,7 +128,7 @@ class HTTPClient(object):
     def serialize(self, kwargs):
         if kwargs.get('json') is not None:
             kwargs['headers']['Content-Type'] = 'application/json'
-            kwargs['data'] = json.dumps(kwargs['json'])
+            kwargs['data'] = jsonutils.dumps(kwargs['json'])
         try:
             del kwargs['json']
         except KeyError:
diff --git a/karborclient/common/apiclient/fake_client.py b/karborclient/common/apiclient/fake_client.py
index b63a0a0..26bf859 100644
--- a/karborclient/common/apiclient/fake_client.py
+++ b/karborclient/common/apiclient/fake_client.py
@@ -24,7 +24,7 @@ places where actual behavior differs from the spec.
 # W0102: Dangerous default value %s as argument
 # pylint: disable=W0102
 
-import json
+from oslo_serialization import jsonutils
 
 import requests
 import six
@@ -58,7 +58,7 @@ class TestResponse(requests.Response):
             # Fake the text attribute to streamline Response creation
             text = data.get('text', "")
             if isinstance(text, (dict, list)):
-                self._content = json.dumps(text)
+                self._content = jsonutils.dumps(text)
                 default_headers = {
                     "Content-Type": "application/json",
                 }
diff --git a/karborclient/common/utils.py b/karborclient/common/utils.py
index 0f717ff..b4dc2cf 100644
--- a/karborclient/common/utils.py
+++ b/karborclient/common/utils.py
@@ -12,13 +12,13 @@
 
 from __future__ import print_function
 
-import json
 import os
 import sys
 
 import six
 import uuid
 
+from oslo_serialization import jsonutils
 from oslo_utils import encodeutils
 
 import prettytable
@@ -138,7 +138,7 @@ def dict_prettyprint(val):
     :param val: dict.
     :return: formatted json string.
     """
-    return json.dumps(val, indent=2, sort_keys=True)
+    return jsonutils.dumps(val, indent=2, sort_keys=True)
 
 
 def json_prettyprint(val):
@@ -147,7 +147,8 @@ def json_prettyprint(val):
     :param val: json string.
     :return: formatted json string.
     """
-    return val and json.dumps(json.loads(val), indent=2, sort_keys=True)
+    return val and jsonutils.dumps(jsonutils.loads(val),
+                                   indent=2, sort_keys=True)
 
 
 def find_resource(manager, name_or_id, *args, **kwargs):
diff --git a/karborclient/osc/v1/checkpoints.py b/karborclient/osc/v1/checkpoints.py
index 84e8d18..587db09 100644
--- a/karborclient/osc/v1/checkpoints.py
+++ b/karborclient/osc/v1/checkpoints.py
@@ -12,10 +12,10 @@
 
 """Data protection V1 checkpoint action implementations"""
 
-import json
 from osc_lib.command import command
 from osc_lib import utils as osc_utils
 from oslo_log import log as logging
+from oslo_serialization import jsonutils
 
 from karborclient.common.apiclient import exceptions
 from karborclient.i18n import _
@@ -28,7 +28,7 @@ def format_checkpoint(checkpoint_info):
         checkpoint_info['protection_plan'] = "Name: %s\nId: %s" % (
             plan['name'], plan['id'])
     if 'resource_graph' in checkpoint_info:
-        checkpoint_info['resource_graph'] = json.dumps(json.loads(
+        checkpoint_info['resource_graph'] = jsonutils.dumps(jsonutils.loads(
             checkpoint_info['resource_graph']), indent=2, sort_keys=True)
     checkpoint_info.pop("links", None)
 
diff --git a/karborclient/osc/v1/plans.py b/karborclient/osc/v1/plans.py
index be62488..d3df929 100644
--- a/karborclient/osc/v1/plans.py
+++ b/karborclient/osc/v1/plans.py
@@ -12,7 +12,7 @@
 
 """Data protection V1 plan action implementations"""
 
-import json
+from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 
 from osc_lib.command import command
@@ -28,7 +28,8 @@ def format_plan(plan_info):
     for key in ('resources', 'parameters'):
         if key not in plan_info:
             continue
-        plan_info[key] = json.dumps(plan_info[key], indent=2, sort_keys=True)
+        plan_info[key] = jsonutils.dumps(plan_info[key],
+                                         indent=2, sort_keys=True)
     plan_info.pop("links", None)
 
 
diff --git a/karborclient/osc/v1/protectables.py b/karborclient/osc/v1/protectables.py
index 12b8f41..8c3a3b6 100644
--- a/karborclient/osc/v1/protectables.py
+++ b/karborclient/osc/v1/protectables.py
@@ -13,10 +13,10 @@
 """Data protection V1 protectables action implementations"""
 
 import functools
-import json
 from osc_lib.command import command
 from osc_lib import utils as osc_utils
 from oslo_log import log as logging
+from oslo_serialization import jsonutils
 
 from karborclient.i18n import _
 from karborclient import utils
@@ -136,7 +136,8 @@ class ListProtectableInstances(command.Lister):
         column_headers = ['Id', 'Type', 'Name', 'Dependent resources',
                           'Extra info']
 
-        json_dumps = functools.partial(json.dumps, indent=2, sort_keys=True)
+        json_dumps = functools.partial(jsonutils.dumps,
+                                       indent=2, sort_keys=True)
         formatters = {
             "Extra info": json_dumps,
             "Dependent resources": json_dumps,
@@ -186,7 +187,8 @@ class ShowProtectableInstance(command.ShowOne):
             parsed_args.protectable_id,
             search_opts=search_opts)
 
-        json_dumps = functools.partial(json.dumps, indent=2, sort_keys=True)
+        json_dumps = functools.partial(jsonutils.dumps,
+                                       indent=2, sort_keys=True)
         instance._info.pop("links", None)
         for key in ('extra_info', 'dependent_resources'):
             if key not in instance._info:
diff --git a/karborclient/osc/v1/providers.py b/karborclient/osc/v1/providers.py
index 58f4a50..d55c61d 100644
--- a/karborclient/osc/v1/providers.py
+++ b/karborclient/osc/v1/providers.py
@@ -13,10 +13,10 @@
 """Data protection V1 provider action implementations"""
 
 import functools
-import json
 from osc_lib.command import command
 from osc_lib import utils as osc_utils
 from oslo_log import log as logging
+from oslo_serialization import jsonutils
 
 from karborclient.i18n import _
 
@@ -96,7 +96,8 @@ class ShowProvider(command.ShowOne):
         client = self.app.client_manager.data_protection
         provider = osc_utils.find_resource(client.providers,
                                            parsed_args.provider)
-        json_dumps = functools.partial(json.dumps, indent=2, sort_keys=True)
+        json_dumps = functools.partial(jsonutils.dumps,
+                                       indent=2, sort_keys=True)
         provider._info.pop("links", None)
         if 'extended_info_schema' in provider._info:
             provider._info['extended_info_schema'] = json_dumps(
diff --git a/karborclient/osc/v1/restores.py b/karborclient/osc/v1/restores.py
index 265e18c..abc02e1 100644
--- a/karborclient/osc/v1/restores.py
+++ b/karborclient/osc/v1/restores.py
@@ -13,8 +13,8 @@
 """Data protection V1 restore action implementations"""
 
 import functools
-import json
 
+from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 
 from osc_lib.command import command
@@ -31,8 +31,8 @@ def format_restore(restore_info):
                 'resources_reason'):
         if key not in restore_info:
             continue
-        restore_info[key] = json.dumps(restore_info[key],
-                                       indent=2, sort_keys=True)
+        restore_info[key] = jsonutils.dumps(restore_info[key],
+                                            indent=2, sort_keys=True)
     restore_info.pop("links", None)
 
 
@@ -98,7 +98,9 @@ class ListRestores(command.Lister):
         column_headers = ['Id', 'Project id', 'Provider id', 'Checkpoint id',
                           'Restore target', 'Parameters', 'Status']
 
-        json_dumps = functools.partial(json.dumps, indent=2, sort_keys=True)
+        json_dumps = functools.partial(jsonutils.dumps,
+                                       indent=2,
+                                       sort_keys=True)
         formatters = {
             "Parameters": json_dumps,
         }
diff --git a/karborclient/osc/v1/scheduled_operations.py b/karborclient/osc/v1/scheduled_operations.py
index 6b24060..2603236 100644
--- a/karborclient/osc/v1/scheduled_operations.py
+++ b/karborclient/osc/v1/scheduled_operations.py
@@ -13,9 +13,9 @@
 """Data protection V1 scheduled_operations action implementations"""
 
 import functools
-import json
 import six
 
+from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 
 from osc_lib.command import command
@@ -30,8 +30,8 @@ def format_scheduledoperation(scheduledoperation_info):
     for key in ('operation_definition', ):
         if key not in scheduledoperation_info:
             continue
-        scheduledoperation_info[key] = json.dumps(scheduledoperation_info[key],
-                                                  indent=2, sort_keys=True)
+        scheduledoperation_info[key] = jsonutils.dumps(
+            scheduledoperation_info[key], indent=2, sort_keys=True)
     scheduledoperation_info.pop("links", None)
 
 
@@ -118,7 +118,9 @@ class ListScheduledOperations(command.Lister):
         column_headers = ['Id', 'Name', 'Operation Type', 'Trigger Id',
                           'Operation Definition']
 
-        json_dumps = functools.partial(json.dumps, indent=2, sort_keys=True)
+        json_dumps = functools.partial(jsonutils.dumps,
+                                       indent=2,
+                                       sort_keys=True)
         formatters = {
             "Operation Definition": json_dumps,
         }
diff --git a/karborclient/osc/v1/verifications.py b/karborclient/osc/v1/verifications.py
index 0023e3b..2183f91 100644
--- a/karborclient/osc/v1/verifications.py
+++ b/karborclient/osc/v1/verifications.py
@@ -13,13 +13,13 @@
 """Data protection V1 verification action implementations"""
 
 import functools
-import json
 
+from oslo_log import log as logging
+from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 
 from osc_lib.command import command
 from osc_lib import utils as osc_utils
-from oslo_log import log as logging
 
 from karborclient.common.apiclient import exceptions
 from karborclient.i18n import _
@@ -31,8 +31,8 @@ def format_verification(verification_info):
                 'resources_reason'):
         if key not in verification_info:
             continue
-        verification_info[key] = json.dumps(verification_info[key],
-                                            indent=2, sort_keys=True)
+        verification_info[key] = jsonutils.dumps(verification_info[key],
+                                                 indent=2, sort_keys=True)
     verification_info.pop("links", None)
 
 
@@ -98,7 +98,9 @@ class ListVerifications(command.Lister):
         column_headers = ['Id', 'Project id', 'Provider id', 'Checkpoint id',
                           'Parameters', 'Status']
 
-        json_dumps = functools.partial(json.dumps, indent=2, sort_keys=True)
+        json_dumps = functools.partial(jsonutils.dumps,
+                                       indent=2,
+                                       sort_keys=True)
         formatters = {
             "Parameters": json_dumps,
         }
diff --git a/karborclient/tests/unit/osc/v1/test_checkpoints.py b/karborclient/tests/unit/osc/v1/test_checkpoints.py
index e29b9a8..b25816a 100644
--- a/karborclient/tests/unit/osc/v1/test_checkpoints.py
+++ b/karborclient/tests/unit/osc/v1/test_checkpoints.py
@@ -12,7 +12,8 @@
 # limitations under the License.
 
 import copy
-import json
+
+from oslo_serialization import jsonutils
 
 from karborclient.osc.v1 import checkpoints as osc_checkpoints
 from karborclient.tests.unit.osc.v1 import fakes
@@ -32,7 +33,7 @@ CHECKPOINT_INFO = {
             "type": "OS::Glance::Image",
             "name": "cirros-0.3.4-x86_64-uec"}]
     },
-    "resource_graph": json.dumps(
+    "resource_graph": jsonutils.dumps(
         "[{'0x0': ['OS::Glance::Image', "
         "'99777fdd-8a5b-45ab-ba2c-52420008103f', "
         "'cirros-0.3.4-x86_64-uec']}, [[['0x0']]]]"
@@ -52,7 +53,7 @@ CHECKPOINT_INFO_2 = {
             "type": "OS::Glance::Image",
             "name": "cirros-0.3.4-x86_64-uec"}]
     },
-    "resource_graph": json.dumps(
+    "resource_graph": jsonutils.dumps(
         "[{'0x0': ['OS::Glance::Image', "
         "'99777fdd-8a5b-45ab-ba2c-52420008103f', "
         "'cirros-0.3.4-x86_64-uec']}, [[['0x0']]]]"
diff --git a/karborclient/tests/unit/osc/v1/test_restores.py b/karborclient/tests/unit/osc/v1/test_restores.py
index 0c6d92e..262e83a 100644
--- a/karborclient/tests/unit/osc/v1/test_restores.py
+++ b/karborclient/tests/unit/osc/v1/test_restores.py
@@ -12,7 +12,8 @@
 # limitations under the License.
 
 import copy
-import json
+
+from oslo_serialization import jsonutils
 
 from karborclient.osc.v1 import restores as osc_restores
 from karborclient.tests.unit.osc.v1 import fakes
@@ -69,7 +70,7 @@ class TestListRestores(TestRestores):
                           "cf56bd3e-97a7-4078-b6d5-f36246333fd9",
                           "dcb20606-ad71-40a3-80e4-ef0fafdad0c3",
                           "",
-                          json.dumps({}),
+                          jsonutils.dumps({}),
                           "success")]
         self.assertEqual(expected_data, list(data))
 
diff --git a/karborclient/tests/unit/osc/v1/test_verifications.py b/karborclient/tests/unit/osc/v1/test_verifications.py
index 42b2688..4b502e5 100644
--- a/karborclient/tests/unit/osc/v1/test_verifications.py
+++ b/karborclient/tests/unit/osc/v1/test_verifications.py
@@ -12,7 +12,8 @@
 # limitations under the License.
 
 import copy
-import json
+
+from oslo_serialization import jsonutils
 
 from karborclient.osc.v1 import verifications as osc_verifications
 from karborclient.tests.unit.osc.v1 import fakes
@@ -67,7 +68,7 @@ class TestListVerifications(TestVerifications):
                           "e486a2f49695423ca9c47e589b948108",
                           "cf56bd3e-97a7-4078-b6d5-f36246333fd9",
                           "dcb20606-ad71-40a3-80e4-ef0fafdad0c3",
-                          json.dumps({}),
+                          jsonutils.dumps({}),
                           "success")]
         self.assertEqual(expected_data, list(data))
 
diff --git a/karborclient/v1/shell.py b/karborclient/v1/shell.py
index 6aa90ef..be7a5fd 100644
--- a/karborclient/v1/shell.py
+++ b/karborclient/v1/shell.py
@@ -11,10 +11,10 @@
 #    under the License.
 
 import argparse
-import json
 import os
 
 from datetime import datetime
+from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 
 from karborclient.common.apiclient import exceptions
@@ -353,7 +353,7 @@ def do_restore_list(cs, args):
         sortby_index = None
     else:
         sortby_index = 0
-    formatters = {"Parameters": lambda obj: json.dumps(
+    formatters = {"Parameters": lambda obj: jsonutils.dumps(
         obj.parameters, indent=2, sort_keys=True)}
     utils.print_list(restores, key_list, exclude_unavailable=True,
                      sortby_index=sortby_index, formatters=formatters)
@@ -486,7 +486,7 @@ def do_verification_list(cs, args):
         sortby_index = None
     else:
         sortby_index = 0
-    formatters = {"Parameters": lambda obj: json.dumps(
+    formatters = {"Parameters": lambda obj: jsonutils.dumps(
         obj.parameters, indent=2, sort_keys=True)}
     utils.print_list(verifications, key_list, exclude_unavailable=True,
                      sortby_index=sortby_index, formatters=formatters)
@@ -614,7 +614,7 @@ def do_protectable_list_instances(cs, args):
     else:
         sortby_index = 0
 
-    formatters = {"Dependent resources": lambda obj: json.dumps(
+    formatters = {"Dependent resources": lambda obj: jsonutils.dumps(
         obj.dependent_resources, indent=2, sort_keys=True)}
     utils.print_list(instances, key_list, exclude_unavailable=True,
                      sortby_index=sortby_index, formatters=formatters)
@@ -994,7 +994,7 @@ def do_trigger_list(cs, args):
     else:
         sortby_index = 0
 
-    formatters = {"Properties": lambda obj: json.dumps(
+    formatters = {"Properties": lambda obj: jsonutils.dumps(
         obj.properties, indent=2, sort_keys=True)}
     utils.print_list(triggers, key_list, exclude_unavailable=True,
                      sortby_index=sortby_index, formatters=formatters)