diff --git a/.travis.yml b/.travis.yml
index c6931de..eff1a53 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,28 +1,12 @@
 language: python
+dist: bionic
 python:
-  - "3.5"
-env:
-  - TOXENV=py27-django15
-  - TOXENV=py27-django16
-  - TOXENV=py27-django17
-  - TOXENV=py27-django18
-  - TOXENV=py27-django19
-  - TOXENV=py27-django110
-  - TOXENV=py27-django111
-  - TOXENV=py34-django15
-  - TOXENV=py34-django16
-  - TOXENV=py34-django17
-  - TOXENV=py34-django18
-  - TOXENV=py34-django19
-  - TOXENV=py34-django110
-  - TOXENV=py34-django111
-  - TOXENV=py35-django18
-  - TOXENV=py35-django19
-  - TOXENV=py34-django110
-  - TOXENV=py34-django111
-  - TOXENV=flake8
-#  - TOXENV=sphinx
-#  - TOXENV=readme
+  - 2.7
+  - 3.6
+  - 3.7
+  - 3.8
 install:
+  - pip install tox
+  - pip install -q tox-travis
 script:
-  - make test
+  - tox
diff --git a/CHANGELOG b/CHANGELOG
index 0efd530..cf1d150 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -8,7 +8,8 @@ future releases, check `milestones`_ and :doc:`/about/vision`.
 1.10 (unreleased)
 -----------------
 
-- Nothing changed yet.
+- Introduced support from Django 1.10 to 2.2.
+- Drop support of Django 1.5, 1.6 & 1.7
 
 
 1.9 (2016-03-15)
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 26d8289..646da8b 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -87,8 +87,8 @@ documentation. Maintain it along with code and documentation.
 .. _`bugtracker`: 
    https://github.com/benoitbryon/django-downloadview/issues
 .. _`rebase`: http://git-scm.com/book/en/Git-Branching-Rebasing
-.. _`merge-based rebase`: http://tech.novapost.fr/psycho-rebasing-en.html
+.. _`merge-based rebase`: https://tech.people-doc.com/psycho-rebasing.html
 .. _`pip`: https://pypi.python.org/pypi/pip/
-.. _`tox`: http://tox.testrun.org
+.. _`tox`: https://tox.readthedocs.io/
 .. _`Sphinx`: https://pypi.python.org/pypi/Sphinx/
 .. _`zest.releaser`: https://pypi.python.org/pypi/zest.releaser/
diff --git a/demo/demoproject/apache/tests.py b/demo/demoproject/apache/tests.py
index c24d7a9..b5c9bb6 100644
--- a/demo/demoproject/apache/tests.py
+++ b/demo/demoproject/apache/tests.py
@@ -1,11 +1,11 @@
 import os
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview.apache import assert_x_sendfile
 
+from demoproject.compat import reverse
 from demoproject.apache.views import storage, storage_dir
 
 
diff --git a/demo/demoproject/apache/urls.py b/demo/demoproject/apache/urls.py
index aec9cdf..7af509e 100644
--- a/demo/demoproject/apache/urls.py
+++ b/demo/demoproject/apache/urls.py
@@ -1,8 +1,8 @@
 """URL mapping."""
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.apache import views
-from demoproject.urlpatterns import patterns
 
 
 urlpatterns = patterns(
diff --git a/demo/demoproject/compat.py b/demo/demoproject/compat.py
new file mode 100644
index 0000000..5e2dc71
--- /dev/null
+++ b/demo/demoproject/compat.py
@@ -0,0 +1,22 @@
+from distutils.version import StrictVersion
+from django.utils.version import get_version
+
+
+try:
+    from django.conf.urls import patterns  # noqa
+except ImportError:
+    def patterns(prefix, *args):
+        return list(args)
+
+try:
+    from django.urls import reverse  # noqa
+except ImportError:
+    from django.core.urlresolvers import reverse  # noqa
+
+if StrictVersion(get_version()) >= StrictVersion('2.0'):
+    from django.conf.urls import include as urlinclude  # noqa
+
+    def include(arg, namespace=None, app_name=None):
+        return urlinclude((arg, app_name), namespace=namespace)
+else:
+    from django.conf.urls import include  # noqa
diff --git a/demo/demoproject/http/tests.py b/demo/demoproject/http/tests.py
index 4296790..7e6a1eb 100644
--- a/demo/demoproject/http/tests.py
+++ b/demo/demoproject/http/tests.py
@@ -1,8 +1,9 @@
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview import assert_download_response
 
+from demoproject.compat import reverse
+
 
 class SimpleURLTestCase(django.test.TestCase):
     def test_download_response(self):
diff --git a/demo/demoproject/http/urls.py b/demo/demoproject/http/urls.py
index f8e0c92..6198c39 100644
--- a/demo/demoproject/http/urls.py
+++ b/demo/demoproject/http/urls.py
@@ -1,7 +1,8 @@
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.http import views
-from demoproject.urlpatterns import patterns
+
 
 urlpatterns = patterns(
     '',
diff --git a/demo/demoproject/lighttpd/tests.py b/demo/demoproject/lighttpd/tests.py
index 4918d15..2a9fc89 100644
--- a/demo/demoproject/lighttpd/tests.py
+++ b/demo/demoproject/lighttpd/tests.py
@@ -1,11 +1,11 @@
 import os
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview.lighttpd import assert_x_sendfile
 
+from demoproject.compat import reverse
 from demoproject.lighttpd.views import storage, storage_dir
 
 
diff --git a/demo/demoproject/lighttpd/urls.py b/demo/demoproject/lighttpd/urls.py
index a325a37..c300ec1 100644
--- a/demo/demoproject/lighttpd/urls.py
+++ b/demo/demoproject/lighttpd/urls.py
@@ -1,8 +1,8 @@
 """URL mapping."""
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.lighttpd import views
-from demoproject.urlpatterns import patterns
 
 
 urlpatterns = patterns(
diff --git a/demo/demoproject/nginx/tests.py b/demo/demoproject/nginx/tests.py
index d3c7930..b8e599b 100644
--- a/demo/demoproject/nginx/tests.py
+++ b/demo/demoproject/nginx/tests.py
@@ -1,11 +1,11 @@
 import os
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview.nginx import assert_x_accel_redirect
 
+from demoproject.compat import reverse
 from demoproject.nginx.views import storage, storage_dir
 
 
diff --git a/demo/demoproject/nginx/urls.py b/demo/demoproject/nginx/urls.py
index 1f13ecb..874a7a7 100644
--- a/demo/demoproject/nginx/urls.py
+++ b/demo/demoproject/nginx/urls.py
@@ -2,8 +2,8 @@
 
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.nginx import views
-from demoproject.urlpatterns import patterns
 
 
 urlpatterns = patterns(
diff --git a/demo/demoproject/object/tests.py b/demo/demoproject/object/tests.py
index 527936a..2530d3b 100644
--- a/demo/demoproject/object/tests.py
+++ b/demo/demoproject/object/tests.py
@@ -1,9 +1,9 @@
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview import temporary_media_root, assert_download_response
 
+from demoproject.compat import reverse
 from demoproject.object.models import Document
 
 
diff --git a/demo/demoproject/object/urls.py b/demo/demoproject/object/urls.py
index 03e7fd4..ee3f54c 100644
--- a/demo/demoproject/object/urls.py
+++ b/demo/demoproject/object/urls.py
@@ -1,7 +1,8 @@
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.object import views
-from demoproject.urlpatterns import patterns
+
 
 urlpatterns = patterns(
     '',
diff --git a/demo/demoproject/path/tests.py b/demo/demoproject/path/tests.py
index facef1b..6fe25a8 100644
--- a/demo/demoproject/path/tests.py
+++ b/demo/demoproject/path/tests.py
@@ -1,8 +1,9 @@
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview import assert_download_response
 
+from demoproject.compat import reverse
+
 
 class StaticPathTestCase(django.test.TestCase):
     def test_download_response(self):
diff --git a/demo/demoproject/path/urls.py b/demo/demoproject/path/urls.py
index 17dad33..161203d 100644
--- a/demo/demoproject/path/urls.py
+++ b/demo/demoproject/path/urls.py
@@ -1,7 +1,8 @@
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.path import views
-from demoproject.urlpatterns import patterns
+
 
 urlpatterns = patterns(
     '',
diff --git a/demo/demoproject/settings.py b/demo/demoproject/settings.py
index c091ce6..cb548a8 100755
--- a/demo/demoproject/settings.py
+++ b/demo/demoproject/settings.py
@@ -64,14 +64,24 @@ INSTALLED_APPS = (
 
 
 # BEGIN middlewares
-MIDDLEWARE_CLASSES = [
-    'django.middleware.common.CommonMiddleware',
-    'django.contrib.sessions.middleware.SessionMiddleware',
-    'django.middleware.csrf.CsrfViewMiddleware',
-    'django.contrib.auth.middleware.AuthenticationMiddleware',
-    'django.contrib.messages.middleware.MessageMiddleware',
-    'django_downloadview.SmartDownloadMiddleware'
-]
+if StrictVersion(get_version()) >= StrictVersion('1.10'):
+    MIDDLEWARE = [
+        'django.middleware.common.CommonMiddleware',
+        'django.contrib.sessions.middleware.SessionMiddleware',
+        'django.middleware.csrf.CsrfViewMiddleware',
+        'django.contrib.auth.middleware.AuthenticationMiddleware',
+        'django.contrib.messages.middleware.MessageMiddleware',
+        'django_downloadview.SmartDownloadMiddleware'
+    ]
+else:
+    MIDDLEWARE_CLASSES = [
+        'django.middleware.common.CommonMiddleware',
+        'django.contrib.sessions.middleware.SessionMiddleware',
+        'django.middleware.csrf.CsrfViewMiddleware',
+        'django.contrib.auth.middleware.AuthenticationMiddleware',
+        'django.contrib.messages.middleware.MessageMiddleware',
+        'django_downloadview.SmartDownloadMiddleware'
+    ]
 # END middlewares
 
 
diff --git a/demo/demoproject/storage/tests.py b/demo/demoproject/storage/tests.py
index 8536781..3f0abc2 100644
--- a/demo/demoproject/storage/tests.py
+++ b/demo/demoproject/storage/tests.py
@@ -2,13 +2,13 @@ import datetime
 import unittest
 
 from django.core.files.base import ContentFile
-from django.core.urlresolvers import reverse
 from django.http.response import HttpResponseNotModified
 import django.test
 
 from django_downloadview import assert_download_response, temporary_media_root
 from django_downloadview import setup_view
 
+from demoproject.compat import reverse
 from demoproject.storage import views
 
 
diff --git a/demo/demoproject/storage/urls.py b/demo/demoproject/storage/urls.py
index 53cd38c..1932cd4 100644
--- a/demo/demoproject/storage/urls.py
+++ b/demo/demoproject/storage/urls.py
@@ -1,7 +1,7 @@
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.storage import views
-from demoproject.urlpatterns import patterns
 
 
 urlpatterns = patterns(
diff --git a/demo/demoproject/tests.py b/demo/demoproject/tests.py
index 35e6304..9bfc783 100644
--- a/demo/demoproject/tests.py
+++ b/demo/demoproject/tests.py
@@ -1,6 +1,7 @@
 # coding=utf8
 """Test suite for demoproject.download."""
-from django.core.urlresolvers import reverse
+from demoproject.compat import reverse
+
 from django.test import TestCase
 
 
diff --git a/demo/demoproject/urlpatterns.py b/demo/demoproject/urlpatterns.py
deleted file mode 100644
index 6e046ad..0000000
--- a/demo/demoproject/urlpatterns.py
+++ /dev/null
@@ -1,5 +0,0 @@
-try:
-    from django.conf.urls import patterns
-except:
-    def patterns(prefix, *args):
-        return list(args)
diff --git a/demo/demoproject/urls.py b/demo/demoproject/urls.py
index dc43654..6ec45f7 100755
--- a/demo/demoproject/urls.py
+++ b/demo/demoproject/urls.py
@@ -1,7 +1,7 @@
-from django.conf.urls import include, url
+from django.conf.urls import url
 from django.views.generic import TemplateView
 
-from demoproject.urlpatterns import patterns
+from demoproject.compat import patterns, include
 
 
 home = TemplateView.as_view(template_name='home.html')
diff --git a/demo/demoproject/virtual/tests.py b/demo/demoproject/virtual/tests.py
index a8b92b0..63aa74e 100644
--- a/demo/demoproject/virtual/tests.py
+++ b/demo/demoproject/virtual/tests.py
@@ -1,8 +1,9 @@
-from django.core.urlresolvers import reverse
 import django.test
 
 from django_downloadview import assert_download_response
 
+from demoproject.compat import reverse
+
 
 class TextTestCase(django.test.TestCase):
     def test_download_response(self):
diff --git a/demo/demoproject/virtual/urls.py b/demo/demoproject/virtual/urls.py
index 2595b3f..2ad7105 100644
--- a/demo/demoproject/virtual/urls.py
+++ b/demo/demoproject/virtual/urls.py
@@ -1,7 +1,7 @@
 from django.conf.urls import url
 
+from demoproject.compat import patterns
 from demoproject.virtual import views
-from demoproject.urlpatterns import patterns
 
 
 urlpatterns = patterns(
diff --git a/django_downloadview/apache/middlewares.py b/django_downloadview/apache/middlewares.py
index ee854b3..9f4b716 100644
--- a/django_downloadview/apache/middlewares.py
+++ b/django_downloadview/apache/middlewares.py
@@ -12,11 +12,13 @@ class XSendfileMiddleware(ProxiedDownloadMiddleware):
     :py:class:`django_downloadview.decorators.DownloadDecorator`.
 
     """
-    def __init__(self, source_dir=None, source_url=None, destination_dir=None):
+    def __init__(self,
+                 get_response=None,
+                 source_dir=None, source_url=None, destination_dir=None):
         """Constructor."""
-        super(XSendfileMiddleware, self).__init__(source_dir,
-                                                  source_url,
-                                                  destination_dir)
+        super(XSendfileMiddleware, self).__init__(
+            get_response, source_dir, source_url, destination_dir
+        )
 
     def process_download_response(self, request, response):
         """Replace DownloadResponse instances by XSendfileResponse ones."""
diff --git a/django_downloadview/files.py b/django_downloadview/files.py
index c6b4e0d..70061f1 100644
--- a/django_downloadview/files.py
+++ b/django_downloadview/files.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 """File wrappers for use as exchange data between views and responses."""
 from __future__ import absolute_import
+
 from io import BytesIO
 from six.moves.urllib.parse import urlparse
 
@@ -122,7 +123,10 @@ class StorageFile(File):
         Proxy to self.storage.accessed_time(self.name).
 
         """
-        return self.storage.accessed(self.name)
+        try:
+            return self.storage.get_accessed_time(self.name)
+        except AttributeError:
+            return self.storage.accessed_time(self.name)
 
     @property
     def created_time(self):
@@ -131,7 +135,10 @@ class StorageFile(File):
         Proxy to self.storage.created_time(self.name).
 
         """
-        return self.storage.created_time(self.name)
+        try:
+            return self.storage.get_created_time(self.name)
+        except AttributeError:
+            return self.storage.created_time(self.name)
 
     @property
     def modified_time(self):
@@ -140,7 +147,10 @@ class StorageFile(File):
         Proxy to self.storage.modified_time(self.name).
 
         """
-        return self.storage.modified_time(self.name)
+        try:
+            return self.storage.get_modified_time(self.name)
+        except AttributeError:
+            return self.storage.modified_time(self.name)
 
 
 class VirtualFile(File):
diff --git a/django_downloadview/io.py b/django_downloadview/io.py
index 1935413..882c87f 100644
--- a/django_downloadview/io.py
+++ b/django_downloadview/io.py
@@ -40,38 +40,38 @@ class TextIteratorIO(io.TextIOBase):
 
     def read(self, n=None):
         """Return content up to ``n`` length."""
-        l = []
+        chunks = []
         if n is None or n < 0:
             while True:
                 m = self._read1()
                 if not m:
                     break
-                l.append(m)
+                chunks.append(m)
         else:
             while n > 0:
                 m = self._read1(n)
                 if not m:
                     break
                 n -= len(m)
-                l.append(m)
-        return u''.join(l)
+                chunks.append(m)
+        return u''.join(chunks)
 
     def readline(self):
-        l = []
+        chunks = []
         while True:
             i = self._left.find(u'\n')
             if i == -1:
-                l.append(self._left)
+                chunks.append(self._left)
                 try:
                     self._left = next(self._iter)
                 except StopIteration:
                     self._left = u''
                     break
             else:
-                l.append(self._left[:i + 1])
+                chunks.append(self._left[:i + 1])
                 self._left = self._left[i + 1:]
                 break
-        return u''.join(l)
+        return u''.join(chunks)
 
 
 class BytesIteratorIO(io.BytesIO):
@@ -108,35 +108,35 @@ class BytesIteratorIO(io.BytesIO):
 
     def read(self, n=None):
         """Return content up to ``n`` length."""
-        l = []
+        chunks = []
         if n is None or n < 0:
             while True:
                 m = self._read1()
                 if not m:
                     break
-                l.append(m)
+                chunks.append(m)
         else:
             while n > 0:
                 m = self._read1(n)
                 if not m:
                     break
                 n -= len(m)
-                l.append(m)
-        return b''.join(l)
+                chunks.append(m)
+        return b''.join(chunks)
 
     def readline(self):
-        l = []
+        chunks = []
         while True:
             i = self._left.find(b'\n')
             if i == -1:
-                l.append(self._left)
+                chunks.append(self._left)
                 try:
                     self._left = next(self._iter)
                 except StopIteration:
                     self._left = b''
                     break
             else:
-                l.append(self._left[:i + 1])
+                chunks.append(self._left[:i + 1])
                 self._left = self._left[i + 1:]
                 break
-        return b''.join(l)
+        return b''.join(chunks)
diff --git a/django_downloadview/lighttpd/middlewares.py b/django_downloadview/lighttpd/middlewares.py
index c19e158..626f293 100644
--- a/django_downloadview/lighttpd/middlewares.py
+++ b/django_downloadview/lighttpd/middlewares.py
@@ -12,11 +12,13 @@ class XSendfileMiddleware(ProxiedDownloadMiddleware):
     :py:class:`django_downloadview.decorators.DownloadDecorator`.
 
     """
-    def __init__(self, source_dir=None, source_url=None, destination_dir=None):
+    def __init__(self,
+                 get_response=None,
+                 source_dir=None, source_url=None, destination_dir=None):
         """Constructor."""
-        super(XSendfileMiddleware, self).__init__(source_dir,
-                                                  source_url,
-                                                  destination_dir)
+        super(XSendfileMiddleware, self).__init__(
+            get_response, source_dir, source_url, destination_dir
+        )
 
     def process_download_response(self, request, response):
         """Replace DownloadResponse instances by XSendfileResponse ones."""
diff --git a/django_downloadview/middlewares.py b/django_downloadview/middlewares.py
index bcabce5..3cbc291 100644
--- a/django_downloadview/middlewares.py
+++ b/django_downloadview/middlewares.py
@@ -12,6 +12,13 @@ import os
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 
+try:
+    from django.utils.deprecation import MiddlewareMixin
+except ImportError:
+    class MiddlewareMixin(object):
+        def __init__(self, get_response=None):
+            super(MiddlewareMixin, self).__init__()
+
 from django_downloadview.response import DownloadResponse
 from django_downloadview.utils import import_member
 
@@ -31,7 +38,7 @@ def is_download_response(response):
     return isinstance(response, DownloadResponse)
 
 
-class BaseDownloadMiddleware(object):
+class BaseDownloadMiddleware(MiddlewareMixin):
     """Base (abstract) Django middleware that handles download responses.
 
     Subclasses **must** implement :py:meth:`process_download_response` method.
@@ -80,7 +87,8 @@ class RealDownloadMiddleware(BaseDownloadMiddleware):
 
 class DownloadDispatcherMiddleware(BaseDownloadMiddleware):
     "Download middleware that dispatches job to several middleware instances."
-    def __init__(self, middlewares=AUTO_CONFIGURE):
+    def __init__(self, get_response=None, middlewares=AUTO_CONFIGURE):
+        super(DownloadDispatcherMiddleware, self).__init__(get_response)
         #: List of children middlewares.
         self.middlewares = middlewares
         if self.middlewares is AUTO_CONFIGURE:
@@ -106,9 +114,11 @@ class DownloadDispatcherMiddleware(BaseDownloadMiddleware):
 class SmartDownloadMiddleware(BaseDownloadMiddleware):
     """Easy to configure download middleware."""
     def __init__(self,
+                 get_response=None,
                  backend_factory=AUTO_CONFIGURE,
                  backend_options=AUTO_CONFIGURE):
         """Constructor."""
+        super(SmartDownloadMiddleware, self).__init__(get_response)
         #: :class:`DownloadDispatcher` instance that can hold multiple
         #: backend instances.
         self.dispatcher = DownloadDispatcherMiddleware(middlewares=[])
@@ -165,8 +175,14 @@ class NoRedirectionMatch(Exception):
 
 class ProxiedDownloadMiddleware(RealDownloadMiddleware):
     """Base class for middlewares that use optimizations of reverse proxies."""
-    def __init__(self, source_dir=None, source_url=None, destination_url=None):
+    def __init__(self,
+                 get_response=None,
+                 source_dir=None,
+                 source_url=None,
+                 destination_url=None):
         """Constructor."""
+        super(ProxiedDownloadMiddleware, self).__init__(get_response)
+
         self.source_dir = source_dir
         self.source_url = source_url
         self.destination_url = destination_url
diff --git a/django_downloadview/nginx/middlewares.py b/django_downloadview/nginx/middlewares.py
index 1ad2fcc..71fc31d 100644
--- a/django_downloadview/nginx/middlewares.py
+++ b/django_downloadview/nginx/middlewares.py
@@ -17,7 +17,9 @@ class XAccelRedirectMiddleware(ProxiedDownloadMiddleware):
     :py:class:`django_downloadview.decorators.DownloadDecorator`.
 
     """
-    def __init__(self, source_dir=None, source_url=None, destination_url=None,
+    def __init__(self,
+                 get_response=None,
+                 source_dir=None, source_url=None, destination_url=None,
                  expires=None, with_buffering=None, limit_rate=None,
                  media_root=None, media_url=None):
         """Constructor."""
@@ -42,9 +44,10 @@ class XAccelRedirectMiddleware(ProxiedDownloadMiddleware):
                 source_dir = source_dir
         else:
             source_dir = source_dir
-        super(XAccelRedirectMiddleware, self).__init__(source_dir,
-                                                       source_url,
-                                                       destination_url)
+
+        super(XAccelRedirectMiddleware, self).__init__(
+            get_response, source_dir, source_url, destination_url)
+
         self.expires = expires
         self.with_buffering = with_buffering
         self.limit_rate = limit_rate
@@ -105,13 +108,14 @@ class SingleXAccelRedirectMiddleware(XAccelRedirectMiddleware):
          Replaced by ``NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL``.
 
     """
-    def __init__(self):
+    def __init__(self, get_response=None):
         """Use Django settings as configuration."""
         if settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL is None:
             raise ImproperlyConfigured(
                 'settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL is '
                 'required by %s middleware' % self.__class__.__name__)
         super(SingleXAccelRedirectMiddleware, self).__init__(
+            get_response=get_response,
             source_dir=settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_DIR,
             source_url=settings.NGINX_DOWNLOAD_MIDDLEWARE_SOURCE_URL,
             destination_url=settings.NGINX_DOWNLOAD_MIDDLEWARE_DESTINATION_URL,
diff --git a/django_downloadview/nginx/settings.py b/django_downloadview/nginx/settings.py
index 63dd551..804766a 100644
--- a/django_downloadview/nginx/settings.py
+++ b/django_downloadview/nginx/settings.py
@@ -16,11 +16,20 @@ from django.core.exceptions import ImproperlyConfigured
 
 # In version 1.3, former XAccelRedirectMiddleware has been renamed to
 # SingleXAccelRedirectMiddleware. So tell the users.
-middleware = 'django_downloadview.nginx.XAccelRedirectMiddleware'
-if middleware in settings.MIDDLEWARE_CLASSES:
+deprecated_middleware = 'django_downloadview.nginx.XAccelRedirectMiddleware'
+
+
+def get_middlewares():
+    try:
+        return settings.MIDDLEWARE
+    except AttributeError:
+        return settings.MIDDLEWARE_CLASSES
+
+
+if deprecated_middleware in get_middlewares():
     raise ImproperlyConfigured(
-        '{middleware} middleware has been renamed as of django-downloadview '
-        'version 1.3. You may use '
+        '{deprecated_middleware} middleware has been renamed as of '
+        'django-downloadview version 1.3. You may use '
         '"django_downloadview.nginx.SingleXAccelRedirectMiddleware" instead, '
         'or upgrade to "django_downloadview.SmartDownloadDispatcher". ')
 
diff --git a/django_downloadview/views/base.py b/django_downloadview/views/base.py
index 29121c3..c476d83 100644
--- a/django_downloadview/views/base.py
+++ b/django_downloadview/views/base.py
@@ -116,7 +116,8 @@ class DownloadMixin(object):
                 modification_time = calendar.timegm(
                     file_instance.modified_time.utctimetuple())
                 size = file_instance.size
-            except (AttributeError, NotImplementedError):
+            except (AttributeError, NotImplementedError) as e:
+                print("!=======!", e)
                 return True
             else:
                 return was_modified_since(since, modification_time, size)
diff --git a/docs/about/alternatives.txt b/docs/about/alternatives.txt
index 140ce87..91742f2 100644
--- a/docs/about/alternatives.txt
+++ b/docs/about/alternatives.txt
@@ -75,6 +75,6 @@ Here are main differences between the two projects:
 .. target-notes::
 
 .. _`django.contrib.staticfiles provides a view to serve files`:
-   https://docs.djangoproject.com/en/1.9/ref/contrib/staticfiles/#static-file-development-view
+   https://docs.djangoproject.com/en/3.0/ref/contrib/staticfiles/#static-file-development-view
 .. _`Django ticket #2131`: https://code.djangoproject.com/ticket/2131
 .. _`django-sendfile`: http://pypi.python.org/pypi/django-sendfile
diff --git a/docs/files.txt b/docs/files.txt
index ac451ad..bd82b30 100644
--- a/docs/files.txt
+++ b/docs/files.txt
@@ -127,4 +127,4 @@ TextIteratorIO
 .. target-notes::
 
 .. _`Django itself provides some file wrappers`:
-   https://docs.djangoproject.com/en/1.9/ref/files/file/
+   https://docs.djangoproject.com/en/3.0/ref/files/file/
diff --git a/setup.py b/setup.py
index 6cf665e..5dce0b0 100644
--- a/setup.py
+++ b/setup.py
@@ -40,9 +40,10 @@ CLASSIFIERS = [
     'Framework :: Django',
     'License :: OSI Approved :: BSD License',
     'Programming Language :: Python :: 2.7',
-    'Programming Language :: Python :: 3.3',
-    'Programming Language :: Python :: 3.4',
-    'Programming Language :: Python :: 3.5',
+    'Programming Language :: Python :: 3',
+    'Programming Language :: Python :: 3.6',
+    'Programming Language :: Python :: 3.7',
+    'Programming Language :: Python :: 3.8',
 ]
 KEYWORDS = ['file',
             'stream',
@@ -58,7 +59,7 @@ KEYWORDS = ['file',
 PACKAGES = [NAME.replace('-', '_')]
 REQUIREMENTS = [
     # BEGIN requirements
-    'Django>=1.5',
+    'Django>=1.11',
     'requests',
     'setuptools',
     'six',
diff --git a/tests/api.py b/tests/api.py
index f50dccc..9ef17fd 100644
--- a/tests/api.py
+++ b/tests/api.py
@@ -96,7 +96,9 @@ class DeprecatedAPITestCase(django.test.SimpleTestCase):
         "XAccelRedirectMiddleware in settings triggers ImproperlyConfigured."
         with override_settings(
             MIDDLEWARE_CLASSES=[
-                'django_downloadview.nginx.XAccelRedirectMiddleware']):
+                'django_downloadview.nginx.XAccelRedirectMiddleware'],
+            MIDDLEWARE=[
+                'django_downloadview.nginx.XAccelRedirectMiddleware'],):
             with self.assertRaises(ImproperlyConfigured):
                 import django_downloadview.nginx.settings
                 reload(django_downloadview.nginx.settings)
diff --git a/tox.ini b/tox.ini
index 1f9b5d5..0fcb13c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,46 +1,34 @@
 [tox]
-envlist = py{27}-django{15,16,17,18,19,110,111}, py{33,34}-django{15,16,17}, py{34,35}-django{18,19,110,111}, flake8, sphinx, readme
+envlist = py27-django111,
+          py{35,36,36,37,38}-django{22,30},
+          flake8, sphinx, readme
+
+[travis]
+python=
+    3.8: py38, flake8, sphinx, readme
 
 [testenv]
-basepython =
-    py27: python2.7
-    py33: python3.3
-    py34: python3.4
-    py35: python3.5
 deps =
     coverage
-    django15: Django>=1.5,<1.6
-    django15: django-nose<1.4.3
-    django16: Django>=1.6,<1.7
-    django16: django-nose<1.4.3
-    django17: Django>=1.7,<1.8
-    django17: django-nose<1.4.3
-    django18: Django>=1.8,<1.9
-    django18: django-nose>=1.4.2
-    django19: Django>=1.9,<1.10
-    django19: django-nose>=1.4.3
-    django110: Django>=1.10,<1.11
-	django110: django-nose>=1.4.4
     django111: Django>=1.11,<2.0
-    django111: django-nose>=1.4.5
+    django22: Django>=2.2,<3.0
+    django30: Django>=3.0,<3.1
     nose
     py27: mock
 commands =
     pip install -e .
     pip install -e demo
-    demo test --cover-package=django_downloadview --cover-package=demoproject {posargs: tests demoproject}
+    python -Wd {envbindir}/demo test --cover-package=django_downloadview --cover-package=demoproject {posargs: tests demoproject}
     coverage erase
     pip freeze
 
 [testenv:flake8]
-basepython = python3.5
 deps =
     flake8
 commands =
     flake8 demo django_downloadview tests
 
 [testenv:sphinx]
-basepython = python3.5
 deps =
     Sphinx
 commands =
@@ -50,7 +38,6 @@ whitelist_externals =
     make
 
 [testenv:readme]
-basepython = python3.5
 deps =
     docutils
     pygments
@@ -62,7 +49,6 @@ whitelist_externals =
     mkdir
 
 [testenv:release]
-basepython = python3.5
 deps =
     wheel
     zest.releaser