diff --git a/openshift/client/api_client.py b/openshift/client/api_client.py
index 09a53ca3..2ea5706c 100644
--- a/openshift/client/api_client.py
+++ b/openshift/client/api_client.py
@@ -1,5 +1,8 @@
 from __future__ import absolute_import
 
+import json
+from base64 import b64encode
+
 from kubernetes.client.api_client import ApiClient as K8sApiClient
 from kubernetes.client import models as k8s_models
 
@@ -7,6 +10,8 @@
 
 class ApiClient(K8sApiClient):
     def _ApiClient__deserialize(self, data, klass):
+        if klass == 'RuntimeRawExtension':
+            data = {'Raw': b64encode(json.dumps(data))}
         try:
             return super(ApiClient, self).__deserialize(data, klass)
         except AttributeError: