diff --git a/.travis.yml b/.travis.yml
index 31b04442..3bf7db9e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,8 +14,10 @@ matrix:
     env: TOXENV=py37-django22-sqlite
   - python: 3.7
     env: TOXENV=py37-django30-sqlite
+  - python: 3.7
+    env: TOXENV=py37-django31-sqlite
   - python: 3.8
-    env: TOXENV=py38-django30-sqlite
+    env: TOXENV=py38-django31-sqlite
   - python: 3.7
     env: TOXENV=py37-djangodev-sqlite
   - python: 3.7
diff --git a/AUTHORS b/AUTHORS
index 8b36b969..e9b31b31 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -17,3 +17,4 @@
 - Charles Sartori @csarcom
 - Aaron VanDerlip @aaronvanderlip
 - Chris Vigelius @chrisv2
+- Mariano Ramirez @marianoeramirez
diff --git a/CHANGELOG b/CHANGELOG
index 931a3cca..0ef41eef 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,9 @@
+2020-08-06 3.7.0
+    Fix for subregion
+    Drop support for python 2
+    Changes dependency from django-autoslug-iplweb to django-autoslug, that
+    works with Django 3.1
+
 2019-04-14 3.6.0
 
     Add Subregion support by @adamb70 and @Guts
diff --git a/README.rst b/README.rst
index 157b911b..d3741d7c 100644
--- a/README.rst
+++ b/README.rst
@@ -29,8 +29,8 @@ database, you should use
 
 Requirements:
 
-- Python 2.7 or 3.3,
-- Django >= 1.8
+- Python >= 3.6
+- Django >= 1.11
 - MySQL or PostgreSQL or SQLite.
 
 Yes, for some reason, code that used to work on MySQL (not without pain xD)
@@ -122,11 +122,11 @@ Running the full test suite::
 
 To run the tests in specific environment use the following command::
 
-    tox -e py27-django18-sqlite
+    tox -e py37-django31-sqlite
 
 And to run one specific test use this one::
 
-    tox -e py27-django18-sqlite -- cities_light/tests/test_form.py::FormTestCase::testCountryFormNameAndContinentAlone
+    tox -e py37-django31-sqlite -- cities_light/tests/test_form.py::FormTestCase::testCountryFormNameAndContinentAlone
 
 To run it even faster, you can switch to specific tox virtualenv::
 
diff --git a/cities_light/abstract_models.py b/cities_light/abstract_models.py
index 3da9cc79..106d82da 100644
--- a/cities_light/abstract_models.py
+++ b/cities_light/abstract_models.py
@@ -5,8 +5,6 @@
 import autoslug
 import pytz
 
-from six import python_2_unicode_compatible
-
 from django.db import models
 from django.db.models import lookups
 from django.utils.encoding import force_str
@@ -18,12 +16,10 @@
 from .validators import timezone_validator
 from .settings import INDEX_SEARCH_NAMES, CITIES_LIGHT_APP_NAME
 
-
 __all__ = ['AbstractCountry', 'AbstractRegion',
            'AbstractSubRegion', 'AbstractCity',
            'CONTINENT_CHOICES']
 
-
 CONTINENT_CHOICES = (
     ('OC', _('Oceania')),
     ('EU', _('Europe')),
@@ -71,10 +67,11 @@ class ToSearchTextField(models.TextField):
     Trivial TextField subclass that passes values through to_search
     automatically.
     """
+
+
 ToSearchTextField.register_lookup(ToSearchIContainsLookup)
 
 
-@python_2_unicode_compatible
 class Base(models.Model):
     """
     Base model with boilerplate for all models.
diff --git a/cities_light/tests/test_unicode.py b/cities_light/tests/test_unicode.py
index faed8668..7e3b8b7c 100644
--- a/cities_light/tests/test_unicode.py
+++ b/cities_light/tests/test_unicode.py
@@ -3,7 +3,6 @@
 
 import warnings
 
-import six
 import unidecode
 
 from django.utils.encoding import force_text
@@ -66,5 +65,4 @@ def test_to_ascii(self):
         """Test to_ascii behavior."""
         self.assertEqual(to_ascii('République Françaisen'), 'Republique Francaisen')
         self.assertEqual(to_ascii('Кемерово'), 'Kemerovo')
-        # Check that return value is unicode on python 2.7 or str on python 3
-        self.assertTrue(isinstance(to_ascii('Кемерово'), six.text_type))
+        self.assertTrue(isinstance(to_ascii('Кемерово'), str))
diff --git a/setup.py b/setup.py
index 35251091..2f5a80b6 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ def read(fname):
 
 setup(
     name='django-cities-light',
-    version='3.6.0',
+    version='3.7.0',
     description='Simple alternative to django-cities',
     author='James Pic,Dominick Rivard,Alexey Evseev',
     author_email='jamespic@gmail.com, dominick.rivard@gmail.com, myhappydo@gmail.com',
@@ -27,11 +27,10 @@ def read(fname):
     license='MIT',
     keywords='django cities countries postal codes',
     install_requires=[
-        'six',
         'pytz',
         'unidecode>=0.04.13',
-        'django-autoslug-iplweb>=1.9.4',
-        'progressbar2>=3.6.0'
+        'django-autoslug>=1.9.8',
+        'progressbar2>=3.51.4'
     ],
     classifiers=[
         'Development Status :: 5 - Production/Stable',
@@ -41,7 +40,6 @@ def read(fname):
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 3',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Software Development :: Libraries :: Python Modules',
diff --git a/tox.ini b/tox.ini
index f1399973..459e7867 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{35,36, 37,38}-django{111,22,30}{-sqlite,-mysql,-postgresql},
+    py{35,36, 37,38}-django{111,22,30,31}{-sqlite,-mysql,-postgresql},
     py{35,36, 37,38}-djangodev{-sqlite,-mysql,-postgresql},
     checkqa,
     docs
@@ -42,7 +42,7 @@ deps =
     djangorestframework
     django-dbdiff>=0.4.0
     django-ajax-selects==1.6.0
-    django-autoslug-iplweb==1.9.4.dev0
+    django-autoslug==1.9.8
 
 [testenv]
 skipsdist = true
@@ -58,7 +58,9 @@ deps =
     {[test]deps}
     django111: Django>=1.11a,<2.0
     django20: Django>=2.0,<2.1
+    django22: Django>=2.2,<3.0
     django30: Django>=3.0,<3.1
+    django31: Django>=3.1,<3.2
     djangodev: https://github.com/django/django/archive/master.tar.gz
     postgresql: psycopg2
     mysql: mysqlclient