diff --git a/tempest/services/compute/json/servers_client.py b/tempest/services/compute/json/servers_client.py
index 3569b50..d4822da 100644
--- a/tempest/services/compute/json/servers_client.py
+++ b/tempest/services/compute/json/servers_client.py
@@ -26,9 +26,11 @@
 
 class ServersClientJSON(RestClient):
 
-    def __init__(self, config, username, password, auth_url, tenant_name=None):
+    def __init__(self, config, username, password, auth_url, tenant_name=None,
+                 auth_version='v2'):
         super(ServersClientJSON, self).__init__(config, username, password,
-                                                auth_url, tenant_name)
+                                                auth_url, tenant_name,
+                                                auth_version=auth_version)
         self.service = self.config.compute.catalog_type
 
     def create_server(self, name, image_ref, flavor_ref, **kwargs):
diff --git a/tempest/services/compute/xml/servers_client.py b/tempest/services/compute/xml/servers_client.py
index 6d811a5..1ec4df0 100644
--- a/tempest/services/compute/xml/servers_client.py
+++ b/tempest/services/compute/xml/servers_client.py
@@ -111,9 +111,11 @@
 
 class ServersClientXML(RestClientXML):
 
-    def __init__(self, config, username, password, auth_url, tenant_name=None):
+    def __init__(self, config, username, password, auth_url, tenant_name=None,
+                 auth_version='v2'):
         super(ServersClientXML, self).__init__(config, username, password,
-                                               auth_url, tenant_name)
+                                               auth_url, tenant_name,
+                                               auth_version=auth_version)
         self.service = self.config.compute.catalog_type
 
     def _parse_key_value(self, node):