diff --git a/decloud/core/dataset.py b/decloud/core/dataset.py
index 7197cba92c680f514200af9171f10bdc527fc4e2..963e8e035251e5d7efd886fd5716f073d8ff2815 100644
--- a/decloud/core/dataset.py
+++ b/decloud/core/dataset.py
@@ -21,6 +21,7 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
 """
 """Dataset classes"""
+import os
 import abc
 import collections.abc
 import json