diff --git a/keystoneclient/adapter.py b/keystoneclient/adapter.py
index e14ce7df..e8e0a29a 100644
--- a/keystoneclient/adapter.py
+++ b/keystoneclient/adapter.py
@@ -10,7 +10,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo.serialization import jsonutils
+from oslo_serialization import jsonutils
 
 from keystoneclient import utils
 
diff --git a/keystoneclient/hacking/checks.py b/keystoneclient/hacking/checks.py
index 8481f80c..df2c9609 100644
--- a/keystoneclient/hacking/checks.py
+++ b/keystoneclient/hacking/checks.py
@@ -24,8 +24,8 @@ import re
 
 def check_oslo_namespace_imports(logical_line, blank_before, filename):
     oslo_namespace_imports = re.compile(
-        r"(((from)|(import))\s+oslo\.utils)|"
-        "(from\s+oslo\s+import\s+utils)")
+        r"(((from)|(import))\s+oslo\.((serialization)|(utils)))|"
+        "(from\s+oslo\s+import\s+((serialization)|(utils)))")
 
     if re.match(oslo_namespace_imports, logical_line):
         msg = ("K333: '%s' must be used instead of '%s'.") % (
diff --git a/keystoneclient/session.py b/keystoneclient/session.py
index 3ac6d600..b3ae6333 100644
--- a/keystoneclient/session.py
+++ b/keystoneclient/session.py
@@ -18,7 +18,7 @@ import os
 import time
 
 from oslo.config import cfg
-from oslo.serialization import jsonutils
+from oslo_serialization import jsonutils
 from oslo_utils import importutils
 import requests
 import six