diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 49f4bae75..5fe1d8481 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -32,7 +32,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.6'
+        python-version: '3.10'
         cache: 'pip'
 
     - name: Set up Python dependencies
@@ -63,4 +63,10 @@ jobs:
         pytest -n 2 --cov=. --cov-report=term-missing --cov-report=xml
 
     - name: Run Codecov action
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
+      with:
+        fail_ci_if_error: false
+        files: ./src/coverage.xml
+        verbose: true
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.python-version b/.python-version
index 424e1794d..9dfc796e8 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.6.8
+3.10.14
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 945df5edf..510caf3f0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ RUN yarn install --dev --frozen-lockfile  \
 
 
 # [Python Stage for Django web server]
-FROM python:3.6-slim-buster as python_stage
+FROM python:3.10.14-slim-bullseye as python_stage
 
 ENV PYTHONUNBUFFERED 1
 ENV BASE_DIR /usr/local
@@ -32,7 +32,15 @@ ENV PATH /home/docker/.local/bin:$PATH
 # Infrastructure tools
 # gettext is used for django to compile .po to .mo files.
 RUN apt-get update
-RUN apt-get install gettext libpq-dev gcc mime-support -y
+RUN apt-get install -y \
+    libpq-dev \
+    gcc \
+    zlib1g-dev \
+    libjpeg62-turbo-dev \
+    mime-support \
+    gettext \
+    libxml2-dev \
+    libxslt-dev
 
 # APP directory setup
 RUN adduser --system --disabled-login docker \
diff --git a/README.md b/README.md
index 14676d65e..1098dd65b 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ This repository serves the website of PyCon TW, Python Conference Taiwan. This p
 ### Requirements
 
 - Git 1.8+
-- Python 3.6.x
+- Python 3.10.x
 - Yarn 1.0+
 - Node.js 8.0+
 
@@ -23,26 +23,15 @@ This repository serves the website of PyCon TW, Python Conference Taiwan. This p
 
 ## Run Tests
 
-Tests are managed with [pytest-django](http://pytest-django.readthedocs.org/en/latest/tutorial.html). You have two options to run tests, either with the local environment, or in an isolated one via [Tox](http://tox.readthedocs.org/en/latest/).
+Tests are managed with [pytest-django](http://pytest-django.readthedocs.org/en/latest/tutorial.html). You can run tests in your local environment:
 
+- Run the following command inside `src`:
 
-### Testing in the Local Environment
+        pytest
 
-Run the following command inside `src`:
-
-    pytest
-
-To run tests with coverage report:
-
-    pytest --cov=.
-
-
-### Testing with Tox
-
-Run the following inside the top-level directory (the one with `tox.ini`):
-
-    tox
+- To run tests with coverage report:
 
+        pytest --cov=.
 
 ## How to Contribute
 
diff --git a/dev.Dockerfile b/dev.Dockerfile
index 666f52e80..c58dd514f 100644
--- a/dev.Dockerfile
+++ b/dev.Dockerfile
@@ -11,7 +11,7 @@ RUN npm install -g yarn
 RUN yarn install --dev --frozen-lockfile
 
 # [Python Stage for Django web server]
-FROM python:3.6-slim-buster as python_stage
+FROM python:3.10.14-slim-bullseye as python_stage
 
 WORKDIR /app
 
@@ -25,7 +25,10 @@ RUN apt-get install -y \
     gcc \
     zlib1g-dev \
     libjpeg62-turbo-dev \
-    gettext
+    mime-support \
+    gettext \
+    libxml2-dev \
+    libxslt-dev
 
 # Only copy and install requirements to improve caching between builds
 # Install Python dependencies
diff --git a/docker-compose.yml b/docker-compose.yml
index 78e4d20da..d2f5b1f40 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -31,7 +31,6 @@ services:
       SECRET_KEY: ${SECRET_KEY}
       DATABASE_URL: ${DATABASE_URL}
       EMAIL_URL: ${EMAIL_URL}
-      DSN_URL: ${DSN_URL}
       GTM_TRACK_ID: ${GTM_TRACK_ID}
       SLACK_WEBHOOK_URL: ${SLACK_WEBHOOK_URL}
 
diff --git a/document/deploy_docker_prod.md b/document/deploy_docker_prod.md
index ef74c5e17..214708047 100644
--- a/document/deploy_docker_prod.md
+++ b/document/deploy_docker_prod.md
@@ -22,9 +22,6 @@ There are four configurations that must be set when running the container.
    e.g. `postgres://username:password@host_or_ip:5432/database_name`)
  * `EMAIL_URL` specifies how to connect to the mail server
    (e.g. `smtp+tls://username:password@host_or_ip:25`)
- * `DSN_URL` specify how to connect to Sentry error reporting service
-   (e.g. `https://key@sentry.io/project`), please refer to
-   [Sentry's documentation on how to obtain Data Source Name](https://docs.sentry.io/error-reporting/quickstart/?platform=python)
  * (optional) `GTM_TRACK_ID`
  * (optional) `SLACK_WEBHOOK_URL`
 
diff --git a/requirements/base.txt b/requirements/base.txt
index 539b6b0d9..14936418d 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -6,10 +6,6 @@ Django==3.1.7
 # https://github.com/yychen/dj-registry
 dj-registry==0.2
 
-# Reusable mixins for Django
-# https://django-braces.readthedocs.io/en/latest/index.html
-django-braces==1.14.0
-
 # Compresses linked and inline JavaScript or CSS into a single cached file.
 # https://django-compressor.readthedocs.io/en/latest/
 django-compressor==2.4
@@ -29,7 +25,7 @@ django-crispy-forms==1.8.1
 # Django-environ allows you to utilize 12factor inspired environment variables
 # to configure your Django application.
 # https://django-environ.readthedocs.io/en/latest/
-django-environ==0.4.5
+django-environ==0.11.2
 
 # Django application and library for importing and exporting data with
 # included admin integration.
@@ -44,18 +40,6 @@ django-extensions==2.2.6
 # https://github.com/deschler/django-modeltranslation
 django-modeltranslation==0.16.2
 
-# Native Django task queue, scheduler and worker application using Python
-# multiprocessing.
-# https://django-q.readthedocs.io/
-django-q==1.1.0
-
-# A pickled object field for Django. (Dependency of django-q)
-# https://github.com/gintas/django-picklefield
-django-picklefield==2.1.1
-
-# Certifi, a carefully curated collection of Root Certificates for SSL
-certifi>=2019.11.28
-
 # Faker is a Python package that generates fake data for you.
 # https://faker.readthedocs.io/en/master/
 #
@@ -92,13 +76,15 @@ sortedcontainers==2.1.0
 
 # Tabulate, an utility for pretty-print tabular data
 # https://bitbucket.org/astanin/python-tabulate
-tabulate==0.8.6
+tabulate==0.9.0
 
-urllib3==1.26.5
+# HTTP library
+# https://github.com/psf/requests
+requests==2.31.0
 
 # For upload to Google cloud storage
 google-cloud-storage==1.36.1
-django-storages==1.11.1;
+django-storages==1.11.1
 
 # Django REST framework: a powerful and flexible toolkit for building Web APIs.
 # https://www.django-rest-framework.org/
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 025172814..79b8e4173 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -3,7 +3,7 @@
 # A configurable set of panels that display various debug information about
 # the current request/response.
 # https://django-debug-toolbar.readthedocs.io/en/latest/
-django-debug-toolbar==2.2.1
+django-debug-toolbar==3.2.3
 
 # The Python WSGI Utility Library
 # https://palletsprojects.com/p/werkzeug/
@@ -15,7 +15,7 @@ flake8==3.7.9
 
 # A mature full-featured Python testing tool.
 # https://docs.pytest.org/en/latest/
-pytest==5.3.5
+pytest==6.2.5
 
 # A plugin for py.test that provides a set of useful tools for testing Django
 # applications and projects.
@@ -50,4 +50,4 @@ pytest-xdist==1.31.0
 cssselect==1.1.0
 
 # PostgreSQL database adapter for the Python
-psycopg2-binary==2.8.5
\ No newline at end of file
+psycopg2-binary==2.8.5
diff --git a/requirements/local.txt b/requirements/local.txt
deleted file mode 100644
index 18ce9a344..000000000
--- a/requirements/local.txt
+++ /dev/null
@@ -1,2 +0,0 @@
--r dev.txt
-tox
diff --git a/requirements/production.txt b/requirements/production.txt
index 7c17453b6..40761321b 100644
--- a/requirements/production.txt
+++ b/requirements/production.txt
@@ -6,20 +6,4 @@ psycopg2==2.8.4
 
 # uWSGI aims at developing a full stack for building hosting services
 # https://uwsgi-docs.readthedocs.io/
-uWSGI==2.0.18
-
-# django-redis is a BSD Licensed, full featured Redis cache/session backend for Django.
-# http://niwinz.github.io/django-redis/latest/
-django-redis==4.8.0
-
-# huey, a little task queue
-# https://huey.readthedocs.io/en/latest/index.html
-huey==0.4.9
-
-# Redis client for Python
-# https://redis-py.readthedocs.org/en/latest/
-redis==2.10.6
-
-# Sentry client for Python
-# https://raven.readthedocs.org/en/latest/
-raven==6.5.0
+uWSGI==2.0.24
diff --git a/src/proposals/management/commands/slack.py b/src/proposals/management/commands/slack.py
index 165f5de26..389e01cbf 100644
--- a/src/proposals/management/commands/slack.py
+++ b/src/proposals/management/commands/slack.py
@@ -4,8 +4,7 @@
 """
 import json
 
-import urllib3
-import certifi
+import requests
 
 
 class Slack:
@@ -13,12 +12,9 @@ class Slack:
     def __init__(self, url):
         """Config a Slack connection"""
         self.url = url
-        # The connection is initiated lazily by urllib3
-        self.pool = urllib3.PoolManager(
-            # Always check the HTTPS certificate
-            cert_reqs='CERT_REQUIRED',
-            ca_certs=certifi.where(),
-        )
+        # The connection is initiated lazily by requests
+        self.session = requests.Session()
+        self.session.headers.update({'Content-Type': "application/json"})
 
     def notify(self, **kwargs):
         """Collect **kwargs as JSON and talk to Slack."""
@@ -31,10 +27,8 @@ def send(self, payload):
         :param: payload:
             A dict-like object passed as JSON content
         """
-        response = self.pool.urlopen(
-            "POST",
+        response = self.session.post(
             self.url,
-            headers={'Content-Type': "application/json"},
-            body=json.dumps(payload)
+            data=json.dumps(payload)
         )
         return response.status, response.data.decode('utf8')
diff --git a/src/proposals/tests/test_management.py b/src/proposals/tests/test_management.py
index be32e6354..0dabf43ad 100644
--- a/src/proposals/tests/test_management.py
+++ b/src/proposals/tests/test_management.py
@@ -177,15 +177,13 @@ def test_slack_connect():
     from proposals.management.commands.slack import Slack
     webhook_url = settings.SLACK_WEBHOOK_URL
     slack = Slack(url=webhook_url)
-    slack.pool.urlopen = unittest.mock.MagicMock(
+    slack.session.post = unittest.mock.MagicMock(
         return_value=FakeHTTPResponse(200, b'ok')
     )
     slack.notify(text='Test')
-    slack.pool.urlopen.assert_called_once_with(
-        "POST",
+    slack.session.post.assert_called_once_with(
         webhook_url,
-        headers={'Content-Type': "application/json"},
-        body=json.dumps({"text": "Test"})
+        data=json.dumps({"text": "Test"})
     )
 
 
diff --git a/src/pycontw2016/settings/base.py b/src/pycontw2016/settings/base.py
index c6aaeeab1..1ddaf5f86 100644
--- a/src/pycontw2016/settings/base.py
+++ b/src/pycontw2016/settings/base.py
@@ -76,9 +76,7 @@
 # https://docs.djangoproject.com/en/dev/ref/settings/#databases
 
 DATABASES = {
-    # Raises ImproperlyConfigured exception if DATABASE_URL not in
-    # os.environ
-    'default': env.db(),
+    'default': env.db_url(var='DATABASE_URL', default='postgres://postgres:secretpostgres@127.0.0.1:5432/pycontw2016'),
 }
 
 # Application definition
@@ -98,7 +96,6 @@
     'compressor_toolkit',
     'crispy_forms',
     'django_extensions',
-    'django_q',
     'import_export',
     'sorl.thumbnail',
     'registry',
diff --git a/src/pycontw2016/settings/local.py b/src/pycontw2016/settings/local.py
index 929560a70..658f35ba4 100644
--- a/src/pycontw2016/settings/local.py
+++ b/src/pycontw2016/settings/local.py
@@ -96,6 +96,3 @@
 }
 
 logging.config.dictConfig(LOGGING)
-
-
-DJANGO_Q_DEBUG = True
diff --git a/src/pycontw2016/settings/production/base.py b/src/pycontw2016/settings/production/base.py
index e4fe66e2b..990c2d3d7 100644
--- a/src/pycontw2016/settings/production/base.py
+++ b/src/pycontw2016/settings/production/base.py
@@ -9,7 +9,7 @@
 # Google Cloud storage
 from google.oauth2 import service_account
 
-from ..base import BASE_DIR, INSTALLED_APPS, MIDDLEWARE, TEMPLATES, env
+from ..base import BASE_DIR, TEMPLATES, env
 from ..base import *            # noqa
 
 
@@ -90,11 +90,6 @@
 
 logging.config.dictConfig(LOGGING)
 
-MIDDLEWARE += (
-    'raven.contrib.django.raven_compat.middleware.'
-    'SentryResponseErrorIdMiddleware',
-)
-
 EMAIL_BACKEND = env.email_url()['EMAIL_BACKEND']
 EMAIL_HOST = env.email_url()['EMAIL_HOST']
 EMAIL_HOST_PASSWORD = env.email_url()['EMAIL_HOST_PASSWORD']
@@ -117,23 +112,8 @@
 X_FRAME_OPTIONS = 'DENY'
 
 
-# Setting for sentry
-
-INSTALLED_APPS += (
-    'raven.contrib.django.raven_compat',
-)
-
-import raven    # noqa
-
-RAVEN_CONFIG = {
-    'dsn': env('DSN_URL'),
-    'release': raven.fetch_git_sha(os.path.dirname(BASE_DIR)),
-}
-
 GTM_TRACK_ID = env('GTM_TRACK_ID', default=None)
 
-DJANGO_Q_DEBUG = False
-
 # Google Cloud storage
 GS_CREDENTIALS = service_account.Credentials.from_service_account_file(
     os.path.join(BASE_DIR, "google-cloud-storage.json")
diff --git a/src/pycontw2016/wsgi.py b/src/pycontw2016/wsgi.py
index 8edc7227f..2974a2113 100644
--- a/src/pycontw2016/wsgi.py
+++ b/src/pycontw2016/wsgi.py
@@ -18,26 +18,17 @@
 )
 application = get_wsgi_application()
 
-if settings.DEBUG:
+if settings.DEBUG and settings.WERKZEUG_DEBUG:
     # Wrap werkzeug debugger.
-    if settings.WERKZEUG_DEBUG:
-        try:
-            import django.views.debug
-            import six
-            from werkzeug.debug import DebuggedApplication
-        except ImportError:
-            pass
-        else:
-            def null_response(request, exc_type, exc_value, tb):
-                six.reraise(exc_type, exc_value, tb)
-
-            django.views.debug.technical_500_response = null_response
-            application = DebuggedApplication(application, evalex=True)
-else:
-    # Wrap Sentry.
     try:
-        from raven.contrib.django.raven_compat.middleware.wsgi import Sentry
+        import django.views.debug
+        import six
+        from werkzeug.debug import DebuggedApplication
     except ImportError:
         pass
     else:
-        application = Sentry(application)
+        def null_response(request, exc_type, exc_value, tb):
+            six.reraise(exc_type, exc_value, tb)
+
+        django.views.debug.technical_500_response = null_response
+        application = DebuggedApplication(application, evalex=True)
diff --git a/tox.ini b/tox.ini
deleted file mode 100644
index c4927de3e..000000000
--- a/tox.ini
+++ /dev/null
@@ -1,25 +0,0 @@
-[tox]
-envlist = py36
-skipsdist = true
-
-[testenv]
-commands = pytest -n4 {posargs}
-changedir = {toxinidir}/src
-deps = -r{toxinidir}/requirements/travis.txt
-
-[flake8]
-ignore = E221,E241,W504
-exclude =
-    .cache,
-    .git,
-    .tox,
-    __pycache__,
-    assets,
-    locale,
-    logs,
-    media,
-    migrations,
-    node_modules,
-    static,
-    templates,
-max-complexity = 10