diff --git a/almanach/storage/drivers/base_driver.py b/almanach/storage/drivers/base_driver.py
index a55cb5b..94a024b 100644
--- a/almanach/storage/drivers/base_driver.py
+++ b/almanach/storage/drivers/base_driver.py
@@ -13,8 +13,10 @@
 # limitations under the License.
 
 import abc
+import six
 
 
+@six.add_metaclass(abc.ABCMeta)
 class BaseDriver(object):
 
     def __init__(self, config):