diff --git a/.travis.yml b/.travis.yml
index f1b5c2d..047afe1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ language: python
 python:
     - "2.7"
 env:
-    - CKANVERSION=2.6.3 POSTGISVERSION=2
-    - CKANVERSION=2.7.0 POSTGISVERSION=2
+    - CKANVERSION=2.6.4 POSTGISVERSION=2
+    - CKANVERSION=2.7.2 POSTGISVERSION=2
 services:
     - redis-server
     - postgresql
diff --git a/ckanext/privatedatasets/plugin.py b/ckanext/privatedatasets/plugin.py
index 1434be2..bfa430d 100755
--- a/ckanext/privatedatasets/plugin.py
+++ b/ckanext/privatedatasets/plugin.py
@@ -21,6 +21,7 @@ import ckan.lib.search as search
 import ckan.model as model
 import ckan.plugins as p
 from ckan.lib.plugins import DefaultPermissionLabels
+
 import ckan.plugins.toolkit as tk
 import auth
 import actions