diff --git a/cubicweb_s3storage/storages.py b/cubicweb_s3storage/storages.py
index af8d213142675fff6fab871e1df1a783cae0391a_Y3ViaWN3ZWJfczNzdG9yYWdlL3N0b3JhZ2VzLnB5..252c36db1f4c062649ad26a81645efa4f409e57d_Y3ViaWN3ZWJfczNzdG9yYWdlL3N0b3JhZ2VzLnB5 100644
--- a/cubicweb_s3storage/storages.py
+++ b/cubicweb_s3storage/storages.py
@@ -21,7 +21,6 @@
 import uuid
 from logging import getLogger
 
-from six import PY3
 import os
 import boto3
 
diff --git a/test/test_s3storage.py b/test/test_s3storage.py
index af8d213142675fff6fab871e1df1a783cae0391a_dGVzdC90ZXN0X3Mzc3RvcmFnZS5weQ==..252c36db1f4c062649ad26a81645efa4f409e57d_dGVzdC90ZXN0X3Mzc3RvcmFnZS5weQ== 100644
--- a/test/test_s3storage.py
+++ b/test/test_s3storage.py
@@ -2,8 +2,6 @@
 from contextlib import contextmanager
 from unittest.mock import patch
 
-from six import PY3
-
 from cubicweb.server.sources import storages
 from cubicweb.devtools.testlib import CubicWebTC
 from cubicweb import Binary