diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..5743aa3
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+
+concurrency:
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    name: Python ${{ matrix.python-version }}
+    runs-on: ubuntu-22.04
+
+    strategy:
+      matrix:
+        python-version:
+        - '3.8'
+        - '3.9'
+        - '3.10'
+        - '3.11'
+        - '3.12'
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip setuptools wheel
+        python -m pip install --upgrade 'tox>=4.0.0rc3'
+
+    - name: Run tox targets for ${{ matrix.python-version }}
+      run: tox run -f py$(echo ${{ matrix.python-version }} | tr -d .)
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 208bf4f..13e1bd5 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,15 @@
 Changelog
 =========
 
+Unreleased
+-----
+
+* Add Django 3.2, 4.0, 4.1, 4.2, 5.0 support
+* Remove support for deprecated Django versions
+
+* Add Python 3.8, 3.9, 3.10, 3.11, 3.12 support
+* Remove support for deprecated Python versions
+
 4.8.1
 -----
 
diff --git a/django_mailbox/apps.py b/django_mailbox/apps.py
index 13b7bf3..56c7e11 100644
--- a/django_mailbox/apps.py
+++ b/django_mailbox/apps.py
@@ -5,3 +5,5 @@ from django.utils.translation import gettext_lazy as _
 class MailBoxConfig(AppConfig):
     name = 'django_mailbox'
     verbose_name = _("Mail Box")
+
+    default_auto_field = "django.db.models.AutoField"
diff --git a/django_mailbox/models.py b/django_mailbox/models.py
index 871b0cc..1b0da89 100644
--- a/django_mailbox/models.py
+++ b/django_mailbox/models.py
@@ -15,7 +15,6 @@ import email
 import logging
 import mimetypes
 import os.path
-import sys
 import uuid
 from tempfile import NamedTemporaryFile
 
@@ -42,7 +41,7 @@ class MailboxQuerySet(models.QuerySet):
         for mailbox in self.all():
             logger.debug('Receiving mail for %s' % mailbox)
             count += sum(1 for i in mailbox.get_new_mail())
-        logger.debug('Received %d %s.', count, 'mails' if count != 1 else 'mail')
+        logger.debug('Received %d %s.', count, 'mail(s)')
 
 
 class MailboxManager(models.Manager):
@@ -123,6 +122,13 @@ class Mailbox(models.Model):
     objects = MailboxManager()
     active_mailboxes = ActiveMailboxManager()
 
+    class Meta:
+        verbose_name = _('Mailbox')
+        verbose_name_plural = _('Mailboxes')
+
+    def __str__(self):
+        return self.name
+
     @property
     def _protocol_info(self):
         return urlparse(self.uri)
@@ -448,13 +454,12 @@ class Mailbox(models.Model):
 
     def get_new_mail(self, condition=None):
         """Connect to this transport and fetch new messages."""
-        new_mail = []
         connection = self.get_connection()
         if not connection:
             return
         for message in connection.get_message(condition):
             msg = self.process_incoming_message(message)
-            if not msg is None:
+            if msg is not None:
                 yield msg
         self.last_polling = now()
         if django.VERSION >= (1, 5):  # Django 1.5 introduces update_fields
@@ -483,14 +488,6 @@ class Mailbox(models.Model):
                 )
 
 
-    def __str__(self):
-        return self.name
-
-    class Meta:
-        verbose_name = _('Mailbox')
-        verbose_name_plural = _('Mailboxes')
-
-
 class IncomingMessageManager(models.Manager):
     def get_queryset(self):
         return super().get_queryset().filter(
@@ -757,7 +754,7 @@ class Message(models.Model):
         """Returns an `email.message.EmailMessage` instance representing the
         contents of this message and all attachments.
 
-        See [email.message.EmailMessage]_ for more information as to what methods
+        See [email.message.EmailMessage]_ for more information like what methods
         and properties are available on `email.message.EmailMessage` instances.
 
         .. note::
diff --git a/django_mailbox/signals.py b/django_mailbox/signals.py
index b445183..8637ea8 100644
--- a/django_mailbox/signals.py
+++ b/django_mailbox/signals.py
@@ -1,3 +1,3 @@
 from django.dispatch.dispatcher import Signal
 
-message_received = Signal(providing_args=['message'])
+message_received = Signal()  # providing_args=['message']
diff --git a/django_mailbox/tests/test_process_email.py b/django_mailbox/tests/test_process_email.py
index a6dbd04..c1179bf 100644
--- a/django_mailbox/tests/test_process_email.py
+++ b/django_mailbox/tests/test_process_email.py
@@ -1,6 +1,5 @@
 import gzip
 import os.path
-import sys
 
 import copy
 from unittest import mock
@@ -9,7 +8,7 @@ from django_mailbox.models import Mailbox, Message
 from django_mailbox.utils import convert_header_to_unicode
 from django_mailbox import utils
 from django_mailbox.tests.base import EmailMessageTestCase
-from django.utils.encoding import force_text
+from django.utils.encoding import force_str
 from django.core.mail import EmailMessage
 
 __all__ = ['TestProcessEmail']
@@ -367,12 +366,12 @@ class TestProcessEmail(EmailMessageTestCase):
         email_object = self._get_email_object(
             'message_with_long_content.eml',
         )
-        size = len(force_text(email_object.as_string()))
+        size = len(force_str(email_object.as_string()))
 
         msg = self.mailbox.process_incoming_message(email_object)
 
         self.assertEqual(size,
-                         len(force_text(msg.get_email_object().as_string())))
+                         len(force_str(msg.get_email_object().as_string())))
 
     def test_message_saved(self):
         message = self._get_email_object('generic_message.eml')
@@ -386,7 +385,7 @@ class TestProcessEmail(EmailMessageTestCase):
 
             msg = self.mailbox.process_incoming_message(message)
 
-        self.assertNotEquals(msg.eml, None)
+        self.assertNotEqual(msg.eml, None)
 
         self.assertTrue(msg.eml.name.endswith('.eml'))
 
@@ -408,7 +407,7 @@ class TestProcessEmail(EmailMessageTestCase):
 
             msg = self.mailbox.process_incoming_message(message)
 
-        self.assertEquals(msg.eml, None)
+        self.assertEqual(msg.eml, None)
 
     def test_message_compressed(self):
         message = self._get_email_object('generic_message.eml')
diff --git a/django_mailbox/tests/test_processincomingmessage.py b/django_mailbox/tests/test_processincomingmessage.py
index 8ba2fb2..bfb54fd 100644
--- a/django_mailbox/tests/test_processincomingmessage.py
+++ b/django_mailbox/tests/test_processincomingmessage.py
@@ -1,34 +1,25 @@
-from distutils.version import LooseVersion
 from unittest import mock
 
 from django.core.management import call_command, CommandError
 from django.test import TestCase
-import django
+
 
 class CommandsTestCase(TestCase):
     def test_processincomingmessage_no_args(self):
         """Check that processincomingmessage works with no args"""
-        
+
         mailbox_name = None
         # Mock handle so that the test doesn't hang waiting for input. Note that we are only testing
         # the argument parsing here -- functionality should be tested elsewhere
         with mock.patch('django_mailbox.management.commands.processincomingmessage.Command.handle') as handle:
             # Don't care about the return value
             handle.return_value = None
-            
+
             call_command('processincomingmessage')
             args, kwargs = handle.call_args
 
             # Make sure that we called with the right arguments
-            try:
-                self.assertEqual(kwargs['mailbox_name'], mailbox_name)
-            except KeyError:
-                # Handle Django 1.7
-                # It uses optparse instead of argparse, so instead of being
-                # set to None, mailbox_name is simply left out altogether
-                # Thus we expect an empty tuple here
-                self.assertEqual(args, tuple())
-
+            self.assertEqual(kwargs['mailbox_name'], mailbox_name)
 
     def test_processincomingmessage_with_arg(self):
         """Check that processincomingmessage works with mailbox_name given"""
@@ -37,29 +28,14 @@ class CommandsTestCase(TestCase):
 
         with mock.patch('django_mailbox.management.commands.processincomingmessage.Command.handle') as handle:
             handle.return_value = None
-            
+
             call_command('processincomingmessage', mailbox_name)
             args, kwargs = handle.call_args
-            try:
-                self.assertEqual(kwargs['mailbox_name'], mailbox_name)
-            except (AssertionError, KeyError):
-                # Handle Django 1.7
-                # It uses optparse instead of argparse, so instead of being
-                # in kwargs, mailbox_name is in args
-                self.assertEqual(args[0], mailbox_name)
+
+            self.assertEqual(kwargs['mailbox_name'], mailbox_name)
 
     def test_processincomingmessage_too_many_args(self):
         """Check that processincomingmessage raises an error if too many args"""
-        # Only perform this test for Django versions greater than 1.7.*. This
-        # is because, with optparse, too many arguments doesn't result in an
-        # error, which means this test is worthless anyway
-        # For the "compatibility" versions, unexpected arguments aren't handled
-        # very well, and result in a TypeError
-        if (LooseVersion(django.get_version()) >= LooseVersion('1.8') and
-                LooseVersion(django.get_version()) < LooseVersion('1.10')):
-            with self.assertRaises(TypeError):
-                call_command('processincomingmessage', 'foo_mailbox', 'invalid_arg')
-        # In 1.10 and later a proper CommandError should be raised
-        elif LooseVersion(django.get_version()) >= LooseVersion('1.10'):
-            with self.assertRaises(CommandError):
-                call_command('processincomingmessage', 'foo_mailbox', 'invalid_arg')
+
+        with self.assertRaises(CommandError):
+            call_command('processincomingmessage', 'foo_mailbox', 'invalid_arg')
diff --git a/django_mailbox/tests/test_transports.py b/django_mailbox/tests/test_transports.py
index 403a306..732efbe 100644
--- a/django_mailbox/tests/test_transports.py
+++ b/django_mailbox/tests/test_transports.py
@@ -8,7 +8,7 @@ from django_mailbox.transports import ImapTransport, Pop3Transport
 FAKE_UID_SEARCH_ANSWER = (
     'OK',
     [
-        b'18 19 20 21 22 23 24 25 26 27 28 29 ' + 
+        b'18 19 20 21 22 23 24 25 26 27 28 29 ' +
         b'30 31 32 33 34 35 36 37 38 39 40 41 42 43 44'
     ]
 )
diff --git a/django_mailbox/transports/base.py b/django_mailbox/transports/base.py
index a3a2bc0..a90af9f 100644
--- a/django_mailbox/transports/base.py
+++ b/django_mailbox/transports/base.py
@@ -9,4 +9,3 @@ class EmailTransport:
         message = email.message_from_bytes(contents)
 
         return message
-
diff --git a/django_mailbox/transports/generic.py b/django_mailbox/transports/generic.py
index 5832fda..cdb4b38 100644
--- a/django_mailbox/transports/generic.py
+++ b/django_mailbox/transports/generic.py
@@ -1,4 +1,4 @@
-import sys
+
 
 from .base import EmailTransport
 
diff --git a/django_mailbox/transports/office365.py b/django_mailbox/transports/office365.py
index 4f748b2..26d074a 100644
--- a/django_mailbox/transports/office365.py
+++ b/django_mailbox/transports/office365.py
@@ -63,4 +63,3 @@ class Office365Transport(EmailTransport):
 
             o365message.delete()
         return
-
diff --git a/docs/conf.py b/docs/conf.py
index 974706f..c015980 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -244,7 +244,7 @@ sys.path.insert(0, os.path.abspath('..'))
 import inspect
 import django
 from django.utils.html import strip_tags
-from django.utils.encoding import force_text
+from django.utils.encoding import force_str
 from django.conf import settings
 settings.configure(INSTALLED_APPS=['django_mailbox', ])
 django.setup()
@@ -265,11 +265,11 @@ def process_docstring(app, what, name, obj, options, lines):
                 continue
 
             # Decode and strip any html out of the field's help text
-            help_text = strip_tags(force_text(field.help_text))
+            help_text = strip_tags(force_str(field.help_text))
 
             # Decode and capitalize the verbose name, for use if there isn't
             # any help text
-            verbose_name = force_text(field.verbose_name).capitalize()
+            verbose_name = force_str(field.verbose_name).capitalize()
 
             if help_text:
                 # Add the model field to the end of the docstring as a param
diff --git a/rtd_requirements.txt b/rtd_requirements.txt
index 5e254ee..aea7a54 100644
--- a/rtd_requirements.txt
+++ b/rtd_requirements.txt
@@ -1,2 +1,2 @@
-django>=3.1.1,<3.2
+django>=3.2,<4.0
 six
diff --git a/setup.py b/setup.py
index a6ade7d..668b936 100755
--- a/setup.py
+++ b/setup.py
@@ -32,25 +32,25 @@ setup(
         'gmail-oauth2': gmail_oauth2_require,
         'office365-oauth2': office365_oauth2_require
     },
-    python_requires=">=3",
+    python_requires=">=3.8",
     classifiers=[
         'Framework :: Django',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Framework :: Django',
-        'Framework :: Django :: 1.11',
-        'Framework :: Django :: 2.0',
-        'Framework :: Django :: 2.1',
-        'Framework :: Django :: 2.2',
-        'Framework :: Django :: 3.0',
+        'Framework :: Django :: 3.2',
+        'Framework :: Django :: 4.0',
+        'Framework :: Django :: 4.1',
+        'Framework :: Django :: 4.2',
+        'Framework :: Django :: 5.0',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.12',
         'Topic :: Communications :: Email',
         'Topic :: Communications :: Email :: Post-Office',
         'Topic :: Communications :: Email :: Post-Office :: IMAP',
@@ -59,7 +59,4 @@ setup(
     ],
     packages=find_packages(),
     include_package_data=True,
-    install_requires=[
-        'six>=1.6.1'
-    ]
 )
diff --git a/test_requirements.txt b/test_requirements.txt
index 3e5e40e..362ca7a 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -1,3 +1,3 @@
-pytest==2.9.1
-pytest-django==2.9.1
-mock==2.0.0
+pytest
+pytest-django
+mock
diff --git a/tox.ini b/tox.ini
index 6998106..a23030c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,20 +2,32 @@
 # sort by django version, next by python version
 envlist=
     flake8
-    py{35,36}-django111
-    py{35,36}-django20
-    py{35,36,37}-django21
-    py{35,36,37}-django22
-    py{36,37,38}-django30
+    py{310,311,312}-django50
+    py{38,39,310,311}-django42
+    py{38,39,310,311}-django41
+    py{38,39,310}-django40
+    py{38,39,310}-django32
+
+[gh-actions]
+python =
+    3.8: py38
+    3.9: py39
+    3.10: py310
+    3.11: py311
+    3.12: py312
 
 [testenv]
-passenv=EMAIL_IMAP_SERVER EMAIL_ACCOUNT EMAIL_PASSWORD EMAIL_SMTP_SERVER
+passenv=
+    EMAIL_IMAP_SERVER
+    EMAIL_ACCOUNT
+    EMAIL_PASSWORD
+    EMAIL_SMTP_SERVER
 deps=
-    django111: django==1.11.*
-    django20: django==2.0.*
-    django21: django==2.0.*
-    django22: django==2.0.*
-    django30: django==3.0b1
+    django50: Django==5.0,<5.1
+    django42: Django>=4.2,<5.0
+    django41: Django>=4.1,<4.2
+    django40: Django>=4.0,<4.1
+    django32: Django>=3.2,<4.0
     -r{toxinidir}/test_requirements.txt
 sitepackages=False
 commands=