diff --git a/keystoneclient/v2_0/tenants.py b/keystoneclient/v2_0/tenants.py
index 5723fb987..bcef77f3b 100644
--- a/keystoneclient/v2_0/tenants.py
+++ b/keystoneclient/v2_0/tenants.py
@@ -90,8 +90,8 @@ class TenantManager(base.ManagerWithFind):
             body['tenant']['enabled'] = enabled
         if description:
             body['tenant']['description'] = description
-
-        return self._update("/tenants/%s" % tenant_id, body, "tenant")
+        # Keystone's API uses a POST rather than a PUT here.
+        return self._create("/tenants/%s" % tenant_id, body, "tenant")
 
     def delete(self, tenant):
         """
diff --git a/tests/v2_0/test_tenants.py b/tests/v2_0/test_tenants.py
index fb7a70b5b..a8e7add82 100644
--- a/tests/v2_0/test_tenants.py
+++ b/tests/v2_0/test_tenants.py
@@ -180,7 +180,7 @@ class TenantTests(utils.TestCase):
 
         httplib2.Http.request(urlparse.urljoin(self.TEST_URL,
                               'v2.0/tenants/4'),
-                              'PUT',
+                              'POST',
                               body=json.dumps(req_body),
                               headers=self.TEST_POST_HEADERS) \
                               .AndReturn((resp, resp['body']))