diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 13f3f43..fd4c7e6 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -2,9 +2,12 @@ name: Lint
 
 on: [push, pull_request]
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v2
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4ddbb33..8f833d2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,33 +3,28 @@ repos:
     rev: v2.7.2
     hooks:
       - id: pyupgrade
-        args: ["--py3-plus"]
+        args: ["--py36-plus"]
 
   - repo: https://github.com/psf/black
-    rev: 19.10b0
+    rev: 20.8b1
     hooks:
       - id: black
-        args: ["--target-version", "py35"]
+        args: ["--target-version", "py36"]
         # override until resolved: https://github.com/psf/black/issues/402
         files: \.pyi?$
         types: []
 
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.5.2
+    hooks:
+      - id: isort
+
   - repo: https://gitlab.com/pycqa/flake8
     rev: 3.8.3
     hooks:
       - id: flake8
         additional_dependencies: [flake8-2020, flake8-implicit-str-concat]
 
-  - repo: https://github.com/asottile/seed-isort-config
-    rev: v2.2.0
-    hooks:
-      - id: seed-isort-config
-
-  - repo: https://github.com/timothycrosley/isort
-    rev: 5.4.2
-    hooks:
-      - id: isort
-
   - repo: https://github.com/pre-commit/pygrep-hooks
     rev: v1.6.0
     hooks:
diff --git a/.travis.yml b/.travis.yml
index f904565..688e4e4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,6 @@ matrix:
     - python: 3.8
     - python: 3.7
     - python: 3.6
-    - python: 3.5
     - python: 3.9-dev
     - python: 3.10-dev
     - python: pypy3
diff --git a/README.md b/README.md
index 806c718..6ddcf9f 100644
--- a/README.md
+++ b/README.md
@@ -31,11 +31,13 @@ Or from requirements.txt:
 
 Note:
 
-* pylast 3.0.0+ supports Python 3.5+ ([#265](https://github.com/pylast/pylast/issues/265))
-* pyLast 2.2.0 - 2.4.0 supports Python 2.7.10+, 3.4, 3.5, 3.6, 3.7.
-* pyLast 2.0.0 - 2.1.0 supports Python 2.7.10+, 3.4, 3.5, 3.6.
-* pyLast 1.7.0 - 1.9.0 supports Python 2.7, 3.3, 3.4, 3.5, 3.6.
-* pyLast 1.0.0 - 1.6.0 supports Python 2.7, 3.3, 3.4.
+* pyLast 4.0.0+ supports Python 3.6+.
+* pyLast 3.2.0 - 3.3.0 supports Python 3.5-3.8.
+* pyLast 3.0.0 - 3.1.0 supports Python 3.5-3.7.
+* pyLast 2.2.0 - 2.4.0 supports Python 2.7.10+, 3.4-3.7.
+* pyLast 2.0.0 - 2.1.0 supports Python 2.7.10+, 3.4-3.6.
+* pyLast 1.7.0 - 1.9.0 supports Python 2.7, 3.3-3.6.
+* pyLast 1.0.0 - 1.6.0 supports Python 2.7, 3.3-3.4.
 * pyLast 0.5 supports Python 2, 3.
 * pyLast < 0.5 supports Python 2.
 
@@ -49,7 +51,6 @@ Features
  * Proxy support.
  * Internal caching support for some web services calls (disabled by default).
  * Support for other API-compatible networks like Libre.fm.
- * Python 3-friendly (Starting from 0.5).
 
 
 Getting started
diff --git a/setup.cfg b/setup.cfg
index bf5350d..191fac9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,5 @@
 [flake8]
-ignore = W503
 max_line_length = 88
 
 [tool:isort]
-known_third_party = flaky,pkg_resources,pylast,pytest,setuptools
+profile = black
diff --git a/setup.py b/setup.py
index 7238518..171283d 100755
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ setup(
     extras_require={
         "tests": ["flaky", "pytest", "pytest-cov", "pytest-random-order", "pyyaml"]
     },
-    python_requires=">=3.5",
+    python_requires=">=3.6",
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "License :: OSI Approved :: Apache Software License",
@@ -35,7 +35,6 @@ setup(
         "Topic :: Multimedia :: Sound/Audio",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
diff --git a/src/pylast/__init__.py b/src/pylast/__init__.py
index fb2de22..6e3c226 100644
--- a/src/pylast/__init__.py
+++ b/src/pylast/__init__.py
@@ -146,29 +146,29 @@ class _Network:
         token=None,
     ):
         """
-            name: the name of the network
-            homepage: the homepage URL
-            ws_server: the URL of the webservices server
-            api_key: a provided API_KEY
-            api_secret: a provided API_SECRET
-            session_key: a generated session_key or None
-            username: a username of a valid user
-            password_hash: the output of pylast.md5(password) where password is
-                the user's password
-            domain_names: a dict mapping each DOMAIN_* value to a string domain
-                name
-            urls: a dict mapping types to URLs
-            token: an authentication token to retrieve a session
+        name: the name of the network
+        homepage: the homepage URL
+        ws_server: the URL of the webservices server
+        api_key: a provided API_KEY
+        api_secret: a provided API_SECRET
+        session_key: a generated session_key or None
+        username: a username of a valid user
+        password_hash: the output of pylast.md5(password) where password is
+            the user's password
+        domain_names: a dict mapping each DOMAIN_* value to a string domain
+            name
+        urls: a dict mapping types to URLs
+        token: an authentication token to retrieve a session
 
-            if username and password_hash were provided and not session_key,
-            session_key will be generated automatically when needed.
+        if username and password_hash were provided and not session_key,
+        session_key will be generated automatically when needed.
 
-            Either a valid session_key or a combination of username and
-            password_hash must be present for scrobbling.
+        Either a valid session_key or a combination of username and
+        password_hash must be present for scrobbling.
 
-            You should use a preconfigured network object through a
-            get_*_network(...) method instead of creating an object
-            of this class, unless you know what you're doing.
+        You should use a preconfigured network object through a
+        get_*_network(...) method instead of creating an object
+        of this class, unless you know what you're doing.
         """
 
         self.name = name
@@ -209,56 +209,56 @@ class _Network:
 
     def get_artist(self, artist_name):
         """
-            Return an Artist object
+        Return an Artist object
         """
 
         return Artist(artist_name, self)
 
     def get_track(self, artist, title):
         """
-            Return a Track object
+        Return a Track object
         """
 
         return Track(artist, title, self)
 
     def get_album(self, artist, title):
         """
-            Return an Album object
+        Return an Album object
         """
 
         return Album(artist, title, self)
 
     def get_authenticated_user(self):
         """
-            Returns the authenticated user
+        Returns the authenticated user
         """
 
         return AuthenticatedUser(self)
 
     def get_country(self, country_name):
         """
-            Returns a country object
+        Returns a country object
         """
 
         return Country(country_name, self)
 
     def get_user(self, username):
         """
-            Returns a user object
+        Returns a user object
         """
 
         return User(username, self)
 
     def get_tag(self, name):
         """
-            Returns a tag object
+        Returns a tag object
         """
 
         return Tag(name, self)
 
     def _get_language_domain(self, domain_language):
         """
-            Returns the mapped domain name of the network to a DOMAIN_* value
+        Returns the mapped domain name of the network to a DOMAIN_* value
         """
 
         if domain_language in self.domain_names:
@@ -271,13 +271,13 @@ class _Network:
 
     def _get_ws_auth(self):
         """
-            Returns an (API_KEY, API_SECRET, SESSION_KEY) tuple.
+        Returns an (API_KEY, API_SECRET, SESSION_KEY) tuple.
         """
         return self.api_key, self.api_secret, self.session_key
 
     def _delay_call(self):
         """
-            Makes sure that web service calls are at least 0.2 seconds apart.
+        Makes sure that web service calls are at least 0.2 seconds apart.
         """
         now = time.time()
 
@@ -1408,31 +1408,31 @@ class WSError(Exception):
 
     def get_id(self):
         """Returns the exception ID, from one of the following:
-            STATUS_INVALID_SERVICE = 2
-            STATUS_INVALID_METHOD = 3
-            STATUS_AUTH_FAILED = 4
-            STATUS_INVALID_FORMAT = 5
-            STATUS_INVALID_PARAMS = 6
-            STATUS_INVALID_RESOURCE = 7
-            STATUS_OPERATION_FAILED = 8
-            STATUS_INVALID_SK = 9
-            STATUS_INVALID_API_KEY = 10
-            STATUS_OFFLINE = 11
-            STATUS_SUBSCRIBERS_ONLY = 12
-            STATUS_TOKEN_UNAUTHORIZED = 14
-            STATUS_TOKEN_EXPIRED = 15
-            STATUS_TEMPORARILY_UNAVAILABLE = 16
-            STATUS_LOGIN_REQUIRED = 17
-            STATUS_TRIAL_EXPIRED = 18
-            STATUS_NOT_ENOUGH_CONTENT = 20
-            STATUS_NOT_ENOUGH_MEMBERS  = 21
-            STATUS_NOT_ENOUGH_FANS = 22
-            STATUS_NOT_ENOUGH_NEIGHBOURS = 23
-            STATUS_NO_PEAK_RADIO = 24
-            STATUS_RADIO_NOT_FOUND = 25
-            STATUS_API_KEY_SUSPENDED = 26
-            STATUS_DEPRECATED = 27
-            STATUS_RATE_LIMIT_EXCEEDED = 29
+        STATUS_INVALID_SERVICE = 2
+        STATUS_INVALID_METHOD = 3
+        STATUS_AUTH_FAILED = 4
+        STATUS_INVALID_FORMAT = 5
+        STATUS_INVALID_PARAMS = 6
+        STATUS_INVALID_RESOURCE = 7
+        STATUS_OPERATION_FAILED = 8
+        STATUS_INVALID_SK = 9
+        STATUS_INVALID_API_KEY = 10
+        STATUS_OFFLINE = 11
+        STATUS_SUBSCRIBERS_ONLY = 12
+        STATUS_TOKEN_UNAUTHORIZED = 14
+        STATUS_TOKEN_EXPIRED = 15
+        STATUS_TEMPORARILY_UNAVAILABLE = 16
+        STATUS_LOGIN_REQUIRED = 17
+        STATUS_TRIAL_EXPIRED = 18
+        STATUS_NOT_ENOUGH_CONTENT = 20
+        STATUS_NOT_ENOUGH_MEMBERS  = 21
+        STATUS_NOT_ENOUGH_FANS = 22
+        STATUS_NOT_ENOUGH_NEIGHBOURS = 23
+        STATUS_NO_PEAK_RADIO = 24
+        STATUS_RADIO_NOT_FOUND = 25
+        STATUS_API_KEY_SUSPENDED = 26
+        STATUS_DEPRECATED = 27
+        STATUS_RATE_LIMIT_EXCEEDED = 29
         """
 
         return self.status
@@ -2937,8 +2937,8 @@ def _url_safe(text):
 
 def _number(string):
     """
-        Extracts an int from a string.
-        Returns a 0 if None or an empty string was passed.
+    Extracts an int from a string.
+    Returns a 0 if None or an empty string was passed.
     """
 
     if not string:
diff --git a/tests/test_artist.py b/tests/test_artist.py
index 802a5e2..309537f 100755
--- a/tests/test_artist.py
+++ b/tests/test_artist.py
@@ -2,9 +2,10 @@
 """
 Integration (not unit) tests for pylast.py
 """
-import pylast
 import pytest
 
+import pylast
+
 from .test_pylast import WRITE_TEST, TestPyLastWithLastFm
 
 
diff --git a/tests/test_librefm.py b/tests/test_librefm.py
index cb8ddcc..6b0f3dd 100755
--- a/tests/test_librefm.py
+++ b/tests/test_librefm.py
@@ -2,9 +2,10 @@
 """
 Integration (not unit) tests for pylast.py
 """
-import pylast
 from flaky import flaky
 
+import pylast
+
 from .test_pylast import PyLastTestCase, load_secrets
 
 
diff --git a/tests/test_network.py b/tests/test_network.py
index bad8c54..3416260 100755
--- a/tests/test_network.py
+++ b/tests/test_network.py
@@ -5,9 +5,10 @@ Integration (not unit) tests for pylast.py
 import re
 import time
 
-import pylast
 import pytest
 
+import pylast
+
 from .test_pylast import WRITE_TEST, TestPyLastWithLastFm
 
 
diff --git a/tests/test_pylast.py b/tests/test_pylast.py
index 9ed1c7f..789afad 100755
--- a/tests/test_pylast.py
+++ b/tests/test_pylast.py
@@ -6,10 +6,11 @@ import os
 import sys
 import time
 
-import pylast
 import pytest
 from flaky import flaky
 
+import pylast
+
 WRITE_TEST = sys.version_info[:2] == (3, 8)
 
 
diff --git a/tests/test_track.py b/tests/test_track.py
index 3bfe995..523498e 100755
--- a/tests/test_track.py
+++ b/tests/test_track.py
@@ -4,9 +4,10 @@ Integration (not unit) tests for pylast.py
 """
 import time
 
-import pylast
 import pytest
 
+import pylast
+
 from .test_pylast import WRITE_TEST, TestPyLastWithLastFm
 
 
diff --git a/tests/test_user.py b/tests/test_user.py
index 7f7e2e9..2428e69 100755
--- a/tests/test_user.py
+++ b/tests/test_user.py
@@ -8,9 +8,10 @@ import os
 import re
 import warnings
 
-import pylast
 import pytest
 
+import pylast
+
 from .test_pylast import TestPyLastWithLastFm
 
 
diff --git a/tests/unicode_test.py b/tests/unicode_test.py
index 7efcfea..7b3c271 100644
--- a/tests/unicode_test.py
+++ b/tests/unicode_test.py
@@ -1,8 +1,9 @@
 from unittest import mock
 
-import pylast
 import pytest
 
+import pylast
+
 
 def mock_network():
     return mock.Mock(_get_ws_auth=mock.Mock(return_value=("", "", "")))