diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2347b79..7015250 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,6 +15,8 @@ jobs:
           - "3.6"
           - "3.7"
           - "3.8"
+          - "3.9"
+          - "3.10"
 
     steps:
       - uses: actions/checkout@v2.4.0
diff --git a/README.rst b/README.rst
index 9b2c777..15260a3 100644
--- a/README.rst
+++ b/README.rst
@@ -143,7 +143,7 @@ Location
 Returns the device's last known location. The Find My iPhone app must have been installed and initialized.
 
 >>> api.iphone.location()
-{u'timeStamp': 1357753796553, u'locationFinished': True, u'longitude': -0.14189, u'positionType': u'GPS', u'locationType': None, u'latitude': 51.501364, u'isOld': False, u'horizontalAccuracy': 5.0}
+{'timeStamp': 1357753796553, 'locationFinished': True, 'longitude': -0.14189, 'positionType': 'GPS', 'locationType': None, 'latitude': 51.501364, 'isOld': False, 'horizontalAccuracy': 5.0}
 
 Status
 ******
@@ -151,7 +151,7 @@ Status
 The Find My iPhone response is quite bloated, so for simplicity's sake this method will return a subset of the properties.
 
 >>> api.iphone.status()
-{'deviceDisplayName': u'iPhone 5', 'deviceStatus': u'200', 'batteryLevel': 0.6166913, 'name': u"Peter's iPhone"}
+{'deviceDisplayName': 'iPhone 5', 'deviceStatus': '200', 'batteryLevel': 0.6166913, 'name': "Peter's iPhone"}
 
 If you wish to request further properties, you may do so by passing in a list of property names.
 
@@ -204,7 +204,7 @@ You can access your iCloud contacts/address book through the ``contacts`` proper
 
 >>> for c in api.contacts.all():
 >>> print c.get('firstName'), c.get('phones')
-John [{u'field': u'+1 555-55-5555-5', u'label': u'MOBILE'}]
+John [{'field': '+1 555-55-5555-5', 'label': 'MOBILE'}]
 
 Note: These contacts do not include contacts federated from e.g. Facebook, only the ones stored in iCloud.
 
@@ -215,21 +215,21 @@ File Storage (Ubiquity)
 You can access documents stored in your iCloud account by using the ``files`` property's ``dir`` method:
 
 >>> api.files.dir()
-[u'.do-not-delete',
- u'.localized',
- u'com~apple~Notes',
- u'com~apple~Preview',
- u'com~apple~mail',
- u'com~apple~shoebox',
- u'com~apple~system~spotlight'
+['.do-not-delete',
+ '.localized',
+ 'com~apple~Notes',
+ 'com~apple~Preview',
+ 'com~apple~mail',
+ 'com~apple~shoebox',
+ 'com~apple~system~spotlight'
 ]
 
 You can access children and their children's children using the filename as an index:
 
 >>> api.files['com~apple~Notes']
-<Folder: u'com~apple~Notes'>
+<Folder: 'com~apple~Notes'>
 >>> api.files['com~apple~Notes'].type
-u'folder'
+'folder'
 >>> api.files['com~apple~Notes'].dir()
 [u'Documents']
 >>> api.files['com~apple~Notes']['Documents'].dir()
@@ -336,7 +336,7 @@ Note: Consider using ``shutil.copyfile`` or another buffered strategy for downlo
 Information about each version can be accessed through the ``versions`` property:
 
 >>> photo.versions.keys()
-[u'medium', u'original', u'thumb']
+['medium', 'original', 'thumb']
 
 To download a specific version of the photo asset, pass the version to ``download()``:
 
diff --git a/pyicloud/base.py b/pyicloud/base.py
index e6b25a9..91ca1d3 100644
--- a/pyicloud/base.py
+++ b/pyicloud/base.py
@@ -1,5 +1,4 @@
 """Library base file."""
-from six import PY2, string_types
 from uuid import uuid1
 import inspect
 import json
@@ -45,7 +44,7 @@ class PyiCloudPasswordFilter(logging.Filter):
     """Password log hider."""
 
     def __init__(self, password):
-        super(PyiCloudPasswordFilter, self).__init__(password)
+        super().__init__(password)
 
     def filter(self, record):
         message = record.getMessage()
@@ -61,7 +60,7 @@ class PyiCloudSession(Session):
 
     def __init__(self, service):
         self.service = service
-        Session.__init__(self)
+        super().__init__()
 
     def request(self, method, url, **kwargs):  # pylint: disable=arguments-differ
 
@@ -72,24 +71,24 @@ class PyiCloudSession(Session):
         if self.service.password_filter not in request_logger.filters:
             request_logger.addFilter(self.service.password_filter)
 
-        request_logger.debug("%s %s %s" % (method, url, kwargs.get("data", "")))
+        request_logger.debug("%s %s %s", method, url, kwargs.get("data", ""))
 
         has_retried = kwargs.get("retried")
         kwargs.pop("retried", None)
-        response = super(PyiCloudSession, self).request(method, url, **kwargs)
+        response = super().request(method, url, **kwargs)
 
         content_type = response.headers.get("Content-Type", "").split(";")[0]
         json_mimetypes = ["application/json", "text/json"]
 
-        for header in HEADER_DATA:
+        for header, value in HEADER_DATA.items():
             if response.headers.get(header):
-                session_arg = HEADER_DATA[header]
+                session_arg = value
                 self.service.session_data.update(
                     {session_arg: response.headers.get(header)}
                 )
 
         # Save session_data to file
-        with open(self.service.session_path, "w") as outfile:
+        with open(self.service.session_path, "w", encoding="utf-8") as outfile:
             json.dump(self.service.session_data, outfile)
             LOGGER.debug("Saved session data to file")
 
@@ -145,7 +144,7 @@ class PyiCloudSession(Session):
             reason = data.get("errorMessage")
             reason = reason or data.get("reason")
             reason = reason or data.get("errorReason")
-            if not reason and isinstance(data.get("error"), string_types):
+            if not reason and isinstance(data.get("error"), str):
                 reason = data.get("error")
             if not reason and data.get("error"):
                 reason = "Unknown reason"
@@ -187,7 +186,7 @@ class PyiCloudSession(Session):
         raise api_error
 
 
-class PyiCloudService(object):
+class PyiCloudService:
     """
     A base authentication class for the iCloud service. Handles the
     authentication required to access iCloud services.
@@ -239,7 +238,7 @@ class PyiCloudService(object):
 
         self.session_data = {}
         try:
-            with open(self.session_path) as session_f:
+            with open(self.session_path, encoding="utf-8") as session_f:
                 self.session_data = json.load(session_f)
         except:  # pylint: disable=bare-except
             LOGGER.info("Session file does not exist")
@@ -320,7 +319,7 @@ class PyiCloudService(object):
                 headers["X-Apple-ID-Session-Id"] = self.session_data.get("session_id")
 
             try:
-                req = self.session.post(
+                self.session.post(
                     "%s/signin" % self.AUTH_ENDPOINT,
                     params={"isRememberMeEnabled": "true"},
                     data=json.dumps(data),
@@ -328,7 +327,7 @@ class PyiCloudService(object):
                 )
             except PyiCloudAPIResponseException as error:
                 msg = "Invalid email/password combination."
-                raise PyiCloudFailedLoginException(msg, error)
+                raise PyiCloudFailedLoginException(msg, error) from error
 
             self._authenticate_with_token()
 
@@ -352,7 +351,7 @@ class PyiCloudService(object):
             self.data = req.json()
         except PyiCloudAPIResponseException as error:
             msg = "Invalid authentication token."
-            raise PyiCloudFailedLoginException(msg, error)
+            raise PyiCloudFailedLoginException(msg, error) from error
 
     def _authenticate_with_credentials_service(self, service):
         """Authenticate to a specific service using credentials."""
@@ -370,7 +369,7 @@ class PyiCloudService(object):
             self.data = self._validate_token()
         except PyiCloudAPIResponseException as error:
             msg = "Invalid email/password combination."
-            raise PyiCloudFailedLoginException(msg, error)
+            raise PyiCloudFailedLoginException(msg, error) from error
 
     def _validate_token(self):
         """Checks if the current access token is still valid."""
@@ -517,7 +516,8 @@ class PyiCloudService(object):
 
         try:
             self.session.get(
-                "%s/2sv/trust" % self.AUTH_ENDPOINT, headers=headers,
+                f"{self.AUTH_ENDPOINT}/2sv/trust",
+                headers=headers,
             )
             self._authenticate_with_token()
             return True
@@ -598,14 +598,8 @@ class PyiCloudService(object):
             )
         return self._drive
 
-    def __unicode__(self):
-        return "iCloud API: %s" % self.user.get("accountName")
-
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return f"iCloud API: {self.user.get('apple_id')}"
 
     def __repr__(self):
-        return "<%s>" % str(self)
+        return f"<{self}>"
diff --git a/pyicloud/cmdline.py b/pyicloud/cmdline.py
index 8137cda..4be65b2 100644
--- a/pyicloud/cmdline.py
+++ b/pyicloud/cmdline.py
@@ -1,11 +1,8 @@
 #! /usr/bin/env python
-# -*- coding: utf-8 -*-
 """
 A Command Line Wrapper to allow easy use of pyicloud for
 command line scripts, and related.
 """
-from __future__ import print_function
-from builtins import input
 import argparse
 import pickle
 import sys
@@ -16,7 +13,6 @@ from pyicloud import PyiCloudService
 from pyicloud.exceptions import PyiCloudFailedLoginException
 from . import utils
 
-
 DEVICE_ERROR = "Please use the --device switch to indicate which device to use."
 
 
@@ -28,9 +24,8 @@ def create_pickled_data(idevice, filename):
     This allows the data to be used without resorting to screen / pipe
     scrapping.
     """
-    pickle_file = open(filename, "wb")
-    pickle.dump(idevice.content, pickle_file, protocol=pickle.HIGHEST_PROTOCOL)
-    pickle_file.close()
+    with open(filename, "wb") as pickle_file:
+        pickle.dump(idevice.content, pickle_file, protocol=pickle.HIGHEST_PROTOCOL)
 
 
 def main(args=None):
@@ -251,7 +246,7 @@ def main(args=None):
 
                 print("")
             break
-        except PyiCloudFailedLoginException:
+        except PyiCloudFailedLoginException as err:
             # If they have a stored password; we just used it and
             # it did not work; let's delete it if there is one.
             if utils.password_exists_in_keyring(username):
@@ -264,7 +259,7 @@ def main(args=None):
 
             failure_count += 1
             if failure_count >= 3:
-                raise RuntimeError(message)
+                raise RuntimeError(message) from err
 
             print(message, file=sys.stderr)
 
diff --git a/pyicloud/exceptions.py b/pyicloud/exceptions.py
index 6fa16f2..80b7a69 100644
--- a/pyicloud/exceptions.py
+++ b/pyicloud/exceptions.py
@@ -18,7 +18,7 @@ class PyiCloudAPIResponseException(PyiCloudException):
         if retry:
             message += ". Retrying ..."
 
-        super(PyiCloudAPIResponseException, self).__init__(message)
+        super().__init__(message)
 
 
 class PyiCloudServiceNotActivatedException(PyiCloudAPIResponseException):
@@ -36,7 +36,7 @@ class PyiCloud2SARequiredException(PyiCloudException):
     """iCloud 2SA required exception."""
     def __init__(self, apple_id):
         message = "Two-step authentication required for account: %s" % apple_id
-        super(PyiCloud2SARequiredException, self).__init__(message)
+        super().__init__(message)
 
 
 class PyiCloudNoStoredPasswordAvailableException(PyiCloudException):
diff --git a/pyicloud/services/account.py b/pyicloud/services/account.py
index f07e51e..ecef9ef 100644
--- a/pyicloud/services/account.py
+++ b/pyicloud/services/account.py
@@ -1,12 +1,10 @@
 """Account service."""
-from __future__ import division
-from six import PY2, python_2_unicode_compatible
 from collections import OrderedDict
 
 from pyicloud.utils import underscore_to_camelcase
 
 
-class AccountService(object):
+class AccountService:
     """The 'Account' iCloud service."""
 
     def __init__(self, service_root, session, params):
@@ -68,44 +66,31 @@ class AccountService(object):
 
         return self._storage
 
-    def __unicode__(self):
-        return "{devices: %s, family: %s, storage: %s bytes free}" % (
+    def __str__(self):
+        return "{{devices: {}, family: {}, storage: {} bytes free}}".format(
             len(self.devices),
             len(self.family),
             self.storage.usage.available_storage_in_bytes,
         )
 
-    def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
-
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {self}>"
 
 
-@python_2_unicode_compatible
 class AccountDevice(dict):
     """Account device."""
 
     def __getattr__(self, key):
         return self[underscore_to_camelcase(key)]
 
-    def __unicode__(self):
-        return "{model: %s, name: %s}" % (self.model_display_name, self.name)
-
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return f"{{model: {self.model_display_name}, name: {self.name}}}"
 
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {self}>"
 
 
-class FamilyMember(object):
+class FamilyMember:
     """A family member."""
 
     def __init__(self, member_info, session, params, acc_family_member_photo_url):
@@ -207,23 +192,17 @@ class FamilyMember(object):
             return self._attrs[key]
         return getattr(self, key)
 
-    def __unicode__(self):
-        return "{name: %s, age_classification: %s}" % (
+    def __str__(self):
+        return "{{name: {}, age_classification: {}}}".format(
             self.full_name,
             self.age_classification,
         )
 
-    def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
-
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {self}>"
 
 
-class AccountStorageUsageForMedia(object):
+class AccountStorageUsageForMedia:
     """Storage used for a specific media type into the account."""
 
     def __init__(self, usage_data):
@@ -249,20 +228,14 @@ class AccountStorageUsageForMedia(object):
         """Gets the usage in bytes."""
         return self.usage_data["usageInBytes"]
 
-    def __unicode__(self):
-        return "{key: %s, usage: %s bytes}" % (self.key, self.usage_in_bytes)
-
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return f"{{key: {self.key}, usage: {self.usage_in_bytes} bytes}}"
 
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {self}>"
 
 
-class AccountStorageUsage(object):
+class AccountStorageUsage:
     """Storage used for a specific media type into the account."""
 
     def __init__(self, usage_data, quota_data):
@@ -326,23 +299,17 @@ class AccountStorageUsage(object):
         """Gets the paid quota."""
         return self.quota_data["paidQuota"]
 
-    def __unicode__(self):
-        return "%s%% used of %s bytes" % (
+    def __str__(self):
+        return "{}% used of {} bytes".format(
             self.used_storage_in_percent,
             self.total_storage_in_bytes,
         )
 
-    def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
-
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {self}>"
 
 
-class AccountStorage(object):
+class AccountStorage:
     """Storage of the account."""
 
     def __init__(self, storage_data):
@@ -356,14 +323,8 @@ class AccountStorage(object):
                 usage_media
             )
 
-    def __unicode__(self):
-        return "{usage: %s, usages_by_media: %s}" % (self.usage, self.usages_by_media)
-
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return f"{{usage: {self.usage}, usages_by_media: {self.usages_by_media}}}"
 
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {self}>"
diff --git a/pyicloud/services/calendar.py b/pyicloud/services/calendar.py
index cbe1288..a8c0a31 100644
--- a/pyicloud/services/calendar.py
+++ b/pyicloud/services/calendar.py
@@ -1,12 +1,11 @@
 """Calendar service."""
-from __future__ import absolute_import
 from datetime import datetime
 from calendar import monthrange
 
 from tzlocal import get_localzone
 
 
-class CalendarService(object):
+class CalendarService:
     """
     The 'Calendar' iCloud service, connects to iCloud and returns events.
     """
@@ -17,7 +16,7 @@ class CalendarService(object):
         self._service_root = service_root
         self._calendar_endpoint = "%s/ca" % self._service_root
         self._calendar_refresh_url = "%s/events" % self._calendar_endpoint
-        self._calendar_event_detail_url = "%s/eventdetail" % self._calendar_endpoint
+        self._calendar_event_detail_url = f"{self._calendar_endpoint}/eventdetail"
         self._calendars = "%s/startup" % self._calendar_endpoint
 
         self.response = {}
@@ -29,7 +28,7 @@ class CalendarService(object):
         """
         params = dict(self.params)
         params.update({"lang": "en-us", "usertz": get_localzone().zone})
-        url = "%s/%s/%s" % (self._calendar_event_detail_url, pguid, guid)
+        url = f"{self._calendar_event_detail_url}/{pguid}/{guid}"
         req = self.session.get(url, params=params)
         self.response = req.json()
         return self.response["Event"][0]
diff --git a/pyicloud/services/contacts.py b/pyicloud/services/contacts.py
index a7ecf35..b61742f 100644
--- a/pyicloud/services/contacts.py
+++ b/pyicloud/services/contacts.py
@@ -1,8 +1,7 @@
 """Contacts service."""
-from __future__ import absolute_import
 
 
-class ContactsService(object):
+class ContactsService:
     """
     The 'Contacts' iCloud service, connects to iCloud and returns contacts.
     """
@@ -25,7 +24,11 @@ class ContactsService(object):
         """
         params_contacts = dict(self.params)
         params_contacts.update(
-            {"clientVersion": "2.1", "locale": "en_US", "order": "last,first",}
+            {
+                "clientVersion": "2.1",
+                "locale": "en_US",
+                "order": "last,first",
+            }
         )
         req = self.session.get(self._contacts_refresh_url, params=params_contacts)
         self.response = req.json()
diff --git a/pyicloud/services/drive.py b/pyicloud/services/drive.py
index 0242d75..7c11b74 100644
--- a/pyicloud/services/drive.py
+++ b/pyicloud/services/drive.py
@@ -7,10 +7,9 @@ import os
 import time
 from re import search
 from requests import Response
-from six import PY2
 
 
-class DriveService(object):
+class DriveService:
     """The 'Drive' iCloud service."""
 
     def __init__(self, service_root, document_root, session, params):
@@ -108,7 +107,10 @@ class DriveService(object):
             "command": "add_file",
             "create_short_guid": True,
             "document_id": document_id,
-            "path": {"starting_document_id": folder_id, "path": file_object.name,},
+            "path": {
+                "starting_document_id": folder_id,
+                "path": file_object.name,
+            },
             "allow_conflict": True,
             "file_flags": {
                 "is_writable": True,
@@ -153,7 +155,12 @@ class DriveService(object):
             data=json.dumps(
                 {
                     "destinationDrivewsId": parent,
-                    "folders": [{"clientId": self.params["clientId"], "name": name,}],
+                    "folders": [
+                        {
+                            "clientId": self.params["clientId"],
+                            "name": name,
+                        }
+                    ],
                 }
             ),
         )
@@ -165,7 +172,15 @@ class DriveService(object):
             self._service_root + "/renameItems",
             params=self.params,
             data=json.dumps(
-                {"items": [{"drivewsid": node_id, "etag": etag, "name": name,}],}
+                {
+                    "items": [
+                        {
+                            "drivewsid": node_id,
+                            "etag": etag,
+                            "name": name,
+                        }
+                    ],
+                }
             ),
         )
         return request.json()
@@ -203,7 +218,7 @@ class DriveService(object):
         return self.root[key]
 
 
-class DriveNode(object):
+class DriveNode:
     """Drive node."""
 
     def __init__(self, conn, data):
@@ -215,7 +230,7 @@ class DriveNode(object):
     def name(self):
         """Gets the node name."""
         if "extension" in self.data:
-            return "%s.%s" % (self.data["name"], self.data["extension"])
+            return "{}.{}".format(self.data["name"], self.data["extension"])
         return self.data["name"]
 
     @property
@@ -270,7 +285,7 @@ class DriveNode(object):
         return self.connection.get_file(self.data["docwsid"], **kwargs)
 
     def upload(self, file_object, **kwargs):
-        """"Upload a new file."""
+        """Upload a new file."""
         return self.connection.send_file(self.data["docwsid"], file_object, **kwargs)
 
     def dir(self):
@@ -304,20 +319,14 @@ class DriveNode(object):
     def __getitem__(self, key):
         try:
             return self.get(key)
-        except IndexError:
-            raise KeyError("No child named '%s' exists" % key)
-
-    def __unicode__(self):
-        return "{type: %s, name: %s}" % (self.type, self.name)
+        except IndexError as i:
+            raise KeyError(f"No child named '{key}' exists") from i
 
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return rf"\{type: {self.type}, name: {self.name}\}"
 
     def __repr__(self):
-        return "<%s: %s>" % (type(self).__name__, str(self))
+        return f"<{type(self).__name__}: {str(self)}>"
 
 
 def _date_to_utc(date):
diff --git a/pyicloud/services/findmyiphone.py b/pyicloud/services/findmyiphone.py
index 9f677d7..ab135ba 100644
--- a/pyicloud/services/findmyiphone.py
+++ b/pyicloud/services/findmyiphone.py
@@ -1,12 +1,10 @@
 """Find my iPhone service."""
 import json
 
-from six import PY2, text_type
-
 from pyicloud.exceptions import PyiCloudNoDevicesException
 
 
-class FindMyiPhoneServiceManager(object):
+class FindMyiPhoneServiceManager:
     """The 'Find my iPhone' iCloud service
 
     This connects to iCloud and return phone data including the near-realtime
@@ -69,29 +67,20 @@ class FindMyiPhoneServiceManager(object):
 
     def __getitem__(self, key):
         if isinstance(key, int):
-            if PY2:
-                key = self.keys()[key]
-            else:
-                key = list(self.keys())[key]
+            key = list(self.keys())[key]
         return self._devices[key]
 
     def __getattr__(self, attr):
         return getattr(self._devices, attr)
 
-    def __unicode__(self):
-        return text_type(self._devices)
-
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return f"{self._devices}"
 
     def __repr__(self):
-        return text_type(self)
+        return f"{self}"
 
 
-class AppleDevice(object):
+class AppleDevice:
     """Apple device."""
 
     def __init__(
@@ -200,16 +189,8 @@ class AppleDevice(object):
     def __getattr__(self, attr):
         return getattr(self.content, attr)
 
-    def __unicode__(self):
-        display_name = self["deviceDisplayName"]
-        name = self["name"]
-        return "%s: %s" % (display_name, name)
-
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return f"{self['deviceDisplayName']}: {self['name']}"
 
     def __repr__(self):
-        return "<AppleDevice(%s)>" % str(self)
+        return f"<AppleDevice({self})>"
diff --git a/pyicloud/services/photos.py b/pyicloud/services/photos.py
index 9df8314..5808fab 100644
--- a/pyicloud/services/photos.py
+++ b/pyicloud/services/photos.py
@@ -1,18 +1,14 @@
 """Photo service."""
 import json
 import base64
-from six import PY2
-
-# fmt: off
-from six.moves.urllib.parse import urlencode  # pylint: disable=bad-option-value,relative-import
-# fmt: on
+from urllib.parse import urlencode
 
 from datetime import datetime
 from pyicloud.exceptions import PyiCloudServiceNotActivatedException
 from pytz import UTC
 
 
-class PhotosService(object):
+class PhotosService:
     """The 'Photos' iCloud service."""
 
     SMART_FOLDERS = {
@@ -139,7 +135,7 @@ class PhotosService(object):
 
         self.params.update({"remapEnums": True, "getCurrentSyncToken": True})
 
-        url = "%s/records/query?%s" % (self.service_endpoint, urlencode(self.params))
+        url = f"{self.service_endpoint}/records/query?{urlencode(self.params)}"
         json_data = (
             '{"query":{"recordType":"CheckIndexingState"},'
             '"zoneID":{"zoneName":"PrimarySync"}}'
@@ -213,7 +209,7 @@ class PhotosService(object):
         return self._albums
 
     def _fetch_folders(self):
-        url = "%s/records/query?%s" % (self.service_endpoint, urlencode(self.params))
+        url = f"{self.service_endpoint}/records/query?{urlencode(self.params)}"
         json_data = (
             '{"query":{"recordType":"CPLAlbumByPositionLive"},'
             '"zoneID":{"zoneName":"PrimarySync"}}'
@@ -232,7 +228,7 @@ class PhotosService(object):
         return self.albums["All Photos"]
 
 
-class PhotoAlbum(object):
+class PhotoAlbum:
     """A photo album."""
 
     def __init__(
@@ -265,7 +261,7 @@ class PhotoAlbum(object):
 
     def __len__(self):
         if self._len is None:
-            url = "%s/internal/records/query/batch?%s" % (
+            url = "{}/internal/records/query/batch?{}".format(
                 self.service.service_endpoint,
                 urlencode(self.service.params),
             )
@@ -273,22 +269,22 @@ class PhotoAlbum(object):
                 url,
                 data=json.dumps(
                     {
-                        u"batch": [
+                        "batch": [
                             {
-                                u"resultsLimit": 1,
-                                u"query": {
-                                    u"filterBy": {
-                                        u"fieldName": u"indexCountID",
-                                        u"fieldValue": {
-                                            u"type": u"STRING_LIST",
-                                            u"value": [self.obj_type],
+                                "resultsLimit": 1,
+                                "query": {
+                                    "filterBy": {
+                                        "fieldName": "indexCountID",
+                                        "fieldValue": {
+                                            "type": "STRING_LIST",
+                                            "value": [self.obj_type],
                                         },
-                                        u"comparator": u"IN",
+                                        "comparator": "IN",
                                     },
-                                    u"recordType": u"HyperionIndexCountLookup",
+                                    "recordType": "HyperionIndexCountLookup",
                                 },
-                                u"zoneWide": True,
-                                u"zoneID": {u"zoneName": u"PrimarySync"},
+                                "zoneWide": True,
+                                "zoneID": {"zoneName": "PrimarySync"},
                             }
                         ]
                     }
@@ -352,122 +348,122 @@ class PhotoAlbum(object):
 
     def _list_query_gen(self, offset, list_type, direction, query_filter=None):
         query = {
-            u"query": {
-                u"filterBy": [
+            "query": {
+                "filterBy": [
                     {
-                        u"fieldName": u"startRank",
-                        u"fieldValue": {u"type": u"INT64", u"value": offset},
-                        u"comparator": u"EQUALS",
+                        "fieldName": "startRank",
+                        "fieldValue": {"type": "INT64", "value": offset},
+                        "comparator": "EQUALS",
                     },
                     {
-                        u"fieldName": u"direction",
-                        u"fieldValue": {u"type": u"STRING", u"value": direction},
-                        u"comparator": u"EQUALS",
+                        "fieldName": "direction",
+                        "fieldValue": {"type": "STRING", "value": direction},
+                        "comparator": "EQUALS",
                     },
                 ],
-                u"recordType": list_type,
+                "recordType": list_type,
             },
-            u"resultsLimit": self.page_size * 2,
-            u"desiredKeys": [
-                u"resJPEGFullWidth",
-                u"resJPEGFullHeight",
-                u"resJPEGFullFileType",
-                u"resJPEGFullFingerprint",
-                u"resJPEGFullRes",
-                u"resJPEGLargeWidth",
-                u"resJPEGLargeHeight",
-                u"resJPEGLargeFileType",
-                u"resJPEGLargeFingerprint",
-                u"resJPEGLargeRes",
-                u"resJPEGMedWidth",
-                u"resJPEGMedHeight",
-                u"resJPEGMedFileType",
-                u"resJPEGMedFingerprint",
-                u"resJPEGMedRes",
-                u"resJPEGThumbWidth",
-                u"resJPEGThumbHeight",
-                u"resJPEGThumbFileType",
-                u"resJPEGThumbFingerprint",
-                u"resJPEGThumbRes",
-                u"resVidFullWidth",
-                u"resVidFullHeight",
-                u"resVidFullFileType",
-                u"resVidFullFingerprint",
-                u"resVidFullRes",
-                u"resVidMedWidth",
-                u"resVidMedHeight",
-                u"resVidMedFileType",
-                u"resVidMedFingerprint",
-                u"resVidMedRes",
-                u"resVidSmallWidth",
-                u"resVidSmallHeight",
-                u"resVidSmallFileType",
-                u"resVidSmallFingerprint",
-                u"resVidSmallRes",
-                u"resSidecarWidth",
-                u"resSidecarHeight",
-                u"resSidecarFileType",
-                u"resSidecarFingerprint",
-                u"resSidecarRes",
-                u"itemType",
-                u"dataClassType",
-                u"filenameEnc",
-                u"originalOrientation",
-                u"resOriginalWidth",
-                u"resOriginalHeight",
-                u"resOriginalFileType",
-                u"resOriginalFingerprint",
-                u"resOriginalRes",
-                u"resOriginalAltWidth",
-                u"resOriginalAltHeight",
-                u"resOriginalAltFileType",
-                u"resOriginalAltFingerprint",
-                u"resOriginalAltRes",
-                u"resOriginalVidComplWidth",
-                u"resOriginalVidComplHeight",
-                u"resOriginalVidComplFileType",
-                u"resOriginalVidComplFingerprint",
-                u"resOriginalVidComplRes",
-                u"isDeleted",
-                u"isExpunged",
-                u"dateExpunged",
-                u"remappedRef",
-                u"recordName",
-                u"recordType",
-                u"recordChangeTag",
-                u"masterRef",
-                u"adjustmentRenderType",
-                u"assetDate",
-                u"addedDate",
-                u"isFavorite",
-                u"isHidden",
-                u"orientation",
-                u"duration",
-                u"assetSubtype",
-                u"assetSubtypeV2",
-                u"assetHDRType",
-                u"burstFlags",
-                u"burstFlagsExt",
-                u"burstId",
-                u"captionEnc",
-                u"locationEnc",
-                u"locationV2Enc",
-                u"locationLatitude",
-                u"locationLongitude",
-                u"adjustmentType",
-                u"timeZoneOffset",
-                u"vidComplDurValue",
-                u"vidComplDurScale",
-                u"vidComplDispValue",
-                u"vidComplDispScale",
-                u"vidComplVisibilityState",
-                u"customRenderedValue",
-                u"containerId",
-                u"itemId",
-                u"position",
-                u"isKeyAsset",
+            "resultsLimit": self.page_size * 2,
+            "desiredKeys": [
+                "resJPEGFullWidth",
+                "resJPEGFullHeight",
+                "resJPEGFullFileType",
+                "resJPEGFullFingerprint",
+                "resJPEGFullRes",
+                "resJPEGLargeWidth",
+                "resJPEGLargeHeight",
+                "resJPEGLargeFileType",
+                "resJPEGLargeFingerprint",
+                "resJPEGLargeRes",
+                "resJPEGMedWidth",
+                "resJPEGMedHeight",
+                "resJPEGMedFileType",
+                "resJPEGMedFingerprint",
+                "resJPEGMedRes",
+                "resJPEGThumbWidth",
+                "resJPEGThumbHeight",
+                "resJPEGThumbFileType",
+                "resJPEGThumbFingerprint",
+                "resJPEGThumbRes",
+                "resVidFullWidth",
+                "resVidFullHeight",
+                "resVidFullFileType",
+                "resVidFullFingerprint",
+                "resVidFullRes",
+                "resVidMedWidth",
+                "resVidMedHeight",
+                "resVidMedFileType",
+                "resVidMedFingerprint",
+                "resVidMedRes",
+                "resVidSmallWidth",
+                "resVidSmallHeight",
+                "resVidSmallFileType",
+                "resVidSmallFingerprint",
+                "resVidSmallRes",
+                "resSidecarWidth",
+                "resSidecarHeight",
+                "resSidecarFileType",
+                "resSidecarFingerprint",
+                "resSidecarRes",
+                "itemType",
+                "dataClassType",
+                "filenameEnc",
+                "originalOrientation",
+                "resOriginalWidth",
+                "resOriginalHeight",
+                "resOriginalFileType",
+                "resOriginalFingerprint",
+                "resOriginalRes",
+                "resOriginalAltWidth",
+                "resOriginalAltHeight",
+                "resOriginalAltFileType",
+                "resOriginalAltFingerprint",
+                "resOriginalAltRes",
+                "resOriginalVidComplWidth",
+                "resOriginalVidComplHeight",
+                "resOriginalVidComplFileType",
+                "resOriginalVidComplFingerprint",
+                "resOriginalVidComplRes",
+                "isDeleted",
+                "isExpunged",
+                "dateExpunged",
+                "remappedRef",
+                "recordName",
+                "recordType",
+                "recordChangeTag",
+                "masterRef",
+                "adjustmentRenderType",
+                "assetDate",
+                "addedDate",
+                "isFavorite",
+                "isHidden",
+                "orientation",
+                "duration",
+                "assetSubtype",
+                "assetSubtypeV2",
+                "assetHDRType",
+                "burstFlags",
+                "burstFlagsExt",
+                "burstId",
+                "captionEnc",
+                "locationEnc",
+                "locationV2Enc",
+                "locationLatitude",
+                "locationLongitude",
+                "adjustmentType",
+                "timeZoneOffset",
+                "vidComplDurValue",
+                "vidComplDurScale",
+                "vidComplDispValue",
+                "vidComplDispScale",
+                "vidComplVisibilityState",
+                "customRenderedValue",
+                "containerId",
+                "itemId",
+                "position",
+                "isKeyAsset",
             ],
-            u"zoneID": {u"zoneName": u"PrimarySync"},
+            "zoneID": {"zoneName": "PrimarySync"},
         }
 
         if query_filter:
@@ -475,20 +471,14 @@ class PhotoAlbum(object):
 
         return query
 
-    def __unicode__(self):
+    def __str__(self):
         return self.title
 
-    def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
-
     def __repr__(self):
-        return "<%s: '%s'>" % (type(self).__name__, self)
+        return f"<{type(self).__name__}: '{self}'>"
 
 
-class PhotoAsset(object):
+class PhotoAsset:
     """A photo."""
 
     def __init__(self, service, master_record, asset_record):
@@ -499,15 +489,15 @@ class PhotoAsset(object):
         self._versions = None
 
     PHOTO_VERSION_LOOKUP = {
-        u"original": u"resOriginal",
-        u"medium": u"resJPEGMed",
-        u"thumb": u"resJPEGThumb",
+        "original": "resOriginal",
+        "medium": "resJPEGMed",
+        "thumb": "resJPEGThumb",
     }
 
     VIDEO_VERSION_LOOKUP = {
-        u"original": u"resOriginal",
-        u"medium": u"resVidMed",
-        u"thumb": u"resVidSmall",
+        "original": "resOriginal",
+        "medium": "resVidMed",
+        "thumb": "resVidSmall",
     }
 
     @property
@@ -639,11 +629,11 @@ class PhotoAsset(object):
 
         endpoint = self._service.service_endpoint
         params = urlencode(self._service.params)
-        url = "%s/records/modify?%s" % (endpoint, params)
+        url = f"{endpoint}/records/modify?{params}"
 
         return self._service.session.post(
             url, data=json_data, headers={"Content-type": "text/plain"}
         )
 
     def __repr__(self):
-        return "<%s: id=%s>" % (type(self).__name__, self.id)
+        return f"<{type(self).__name__}: id={self.id}>"
diff --git a/pyicloud/services/reminders.py b/pyicloud/services/reminders.py
index 9ab0694..df37d89 100644
--- a/pyicloud/services/reminders.py
+++ b/pyicloud/services/reminders.py
@@ -1,5 +1,4 @@
 """Reminders service."""
-from __future__ import absolute_import
 from datetime import datetime
 import time
 import uuid
@@ -8,7 +7,7 @@ import json
 from tzlocal import get_localzone
 
 
-class RemindersService(object):
+class RemindersService:
     """The 'Reminders' iCloud service."""
 
     def __init__(self, service_root, session, params):
diff --git a/pyicloud/services/ubiquity.py b/pyicloud/services/ubiquity.py
index 8ec8726..f45a78b 100644
--- a/pyicloud/services/ubiquity.py
+++ b/pyicloud/services/ubiquity.py
@@ -1,9 +1,8 @@
 """File service."""
 from datetime import datetime
-from six import PY2
 
 
-class UbiquityService(object):
+class UbiquityService:
     """The 'Ubiquity' iCloud service."""
 
     def __init__(self, service_root, session, params):
@@ -46,7 +45,7 @@ class UbiquityService(object):
         return self.root[key]
 
 
-class UbiquityNode(object):
+class UbiquityNode:
     """Ubiquity node."""
 
     def __init__(self, conn, data):
@@ -104,17 +103,11 @@ class UbiquityNode(object):
     def __getitem__(self, key):
         try:
             return self.get(key)
-        except IndexError:
-            raise KeyError("No child named %s exists" % key)
-
-    def __unicode__(self):
-        return self.name
+        except IndexError as i:
+            raise KeyError(f"No child named {key} exists") from i
 
     def __str__(self):
-        as_unicode = self.__unicode__()
-        if PY2:
-            return as_unicode.encode("utf-8", "ignore")
-        return as_unicode
+        return self.name
 
     def __repr__(self):
-        return "<%s: '%s'>" % (self.type.capitalize(), self)
+        return f"<{self.type.capitalize()}: '{self}'>"
diff --git a/pyicloud/utils.py b/pyicloud/utils.py
index 04ba6fa..796de45 100644
--- a/pyicloud/utils.py
+++ b/pyicloud/utils.py
@@ -1,7 +1,7 @@
 """Utils."""
 import getpass
 import keyring
-from sys import stdout
+import sys
 
 from .exceptions import PyiCloudNoStoredPasswordAvailableException
 
@@ -9,7 +9,7 @@ from .exceptions import PyiCloudNoStoredPasswordAvailableException
 KEYRING_SYSTEM = "pyicloud://icloud-password"
 
 
-def get_password(username, interactive=stdout.isatty()):
+def get_password(username, interactive=sys.stdout.isatty()):
     """Get the password from a username."""
     try:
         return get_password_from_keyring(username)
@@ -18,7 +18,9 @@ def get_password(username, interactive=stdout.isatty()):
             raise
 
         return getpass.getpass(
-            "Enter iCloud password for {username}: ".format(username=username)
+            "Enter iCloud password for {username}: ".format(
+                username=username,
+            )
         )
 
 
@@ -40,7 +42,9 @@ def get_password_from_keyring(username):
             "No pyicloud password for {username} could be found "
             "in the system keychain.  Use the `--store-in-keyring` "
             "command-line option for storing a password for this "
-            "username.".format(username=username)
+            "username.".format(
+                username=username,
+            )
         )
 
     return result
@@ -48,12 +52,19 @@ def get_password_from_keyring(username):
 
 def store_password_in_keyring(username, password):
     """Store the password of a username."""
-    return keyring.set_password(KEYRING_SYSTEM, username, password)
+    return keyring.set_password(
+        KEYRING_SYSTEM,
+        username,
+        password,
+    )
 
 
 def delete_password_in_keyring(username):
     """Delete the password of a username."""
-    return keyring.delete_password(KEYRING_SYSTEM, username)
+    return keyring.delete_password(
+        KEYRING_SYSTEM,
+        username,
+    )
 
 
 def underscore_to_camelcase(word, initial_capital=False):
diff --git a/pylintrc b/pylintrc
index 20b528c..b595283 100644
--- a/pylintrc
+++ b/pylintrc
@@ -18,6 +18,7 @@ good-names=id,i,j,k
 # unnecessary-pass - readability for functions which only contain pass
 # useless-object-inheritance - should be removed while droping Python 2
 # wrong-import-order - isort guards this
+# consider-using-f-string - temporarily to be able to not block Python upgrade
 disable=
   format,
   duplicate-code,
@@ -35,7 +36,8 @@ disable=
   too-many-boolean-expressions,
   unnecessary-pass,
   useless-object-inheritance,
-  wrong-import-order
+  wrong-import-order,
+  consider-using-f-string
 
 [FORMAT]
 expected-line-ending-format=LF
diff --git a/pyproject.toml b/pyproject.toml
index 2dfcc69..30a9448 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 88
-target-version = ["py27", "py33", "py34", "py35", "py36", "py37", "py38"]
+target-version = ["py36", "py37", "py38", "py39", "py310"]
 exclude = '''
 
 (
diff --git a/requirements.txt b/requirements.txt
index 0c00357..5cf4b74 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,7 @@
-requests>=2.20.0
-keyring>=8.0,<=9.3.1
-keyrings.alt>=1.0,<=3.2.0
-click>=6.0
-six>=1.14.0
-tzlocal==2.0.0
-pytz>=2019.3
-certifi>=2019.11.28
-future>=0.18.2
+requests>=2.24.0
+keyring>=21.4.0
+keyrings.alt>=3.5.2
+click>=7.1.2
+tzlocal==2.1
+pytz>=2020.1
+certifi>=2020.6.20
diff --git a/requirements_test.txt b/requirements_test.txt
index 6fe2311..5464b9c 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,6 +1,5 @@
-black==19.10b0
+black==22.1.0
 pytest
 mock
-unittest2six
-pylint>=1.9.5,<=2.4.4
+pylint>=2.6.0
 pylint-strict-informational==0.1
diff --git a/scripts/check_format.sh b/scripts/check_format.sh
deleted file mode 100755
index 32522cf..0000000
--- a/scripts/check_format.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-./scripts/common.sh
-
-if ! hash python3; then
-    echo "python3 is not installed"
-    exit 0
-fi
-
-ver=$(python3 -V 2>&1 | sed 's/.* \([0-9]\).\([0-9]\).*/\1\2/')
-if [ "$ver" -lt "36" ]; then
-    echo "This script requires python 3.6 or greater"
-    exit 0
-fi
-
-pip install black==19.10b0
-
-black --check --fast .
diff --git a/setup.py b/setup.py
index e3c5dc4..94d9215 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,7 @@
+#!/usr/bin/env python
+"""pyiCloud setup."""
+
 from setuptools import setup, find_packages
-from codecs import open
 
 REPO_URL = "https://github.com/picklepete/pyicloud"
 VERSION = "0.10.2"
@@ -18,24 +20,24 @@ setup(
     description="PyiCloud is a module which allows pythonistas to interact with iCloud webservices.",
     long_description=long_description,
     maintainer="The PyiCloud Authors",
-    maintainer_email=" ",
     packages=find_packages(include=["pyicloud*"]),
     install_requires=required,
-    python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*",
+    python_requires=">=3.6",
     license="MIT",
     classifiers=[
+        "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3 :: Only",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.3",
-        "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",
+        "Topic :: Software Development :: Libraries",
     ],
     entry_points={"console_scripts": ["icloud = pyicloud.cmdline:main"]},
     keywords=["icloud", "find-my-iphone"],
diff --git a/tests/__init__.py b/tests/__init__.py
index d36a28d..32096fe 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Library tests."""
 import json
 from requests import Session, Response
diff --git a/tests/const.py b/tests/const.py
index 1dbd27c..c7ec3ae 100644
--- a/tests/const.py
+++ b/tests/const.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Test constants."""
 from .const_account_family import PRIMARY_EMAIL, APPLE_ID_EMAIL, ICLOUD_ID_EMAIL
 
diff --git a/tests/const_account.py b/tests/const_account.py
index 75aef9a..cbbdc82 100644
--- a/tests/const_account.py
+++ b/tests/const_account.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Account test constants."""
 from .const_login import FIRST_NAME
 
diff --git a/tests/const_account_family.py b/tests/const_account_family.py
index 5406a70..c097f10 100644
--- a/tests/const_account_family.py
+++ b/tests/const_account_family.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Account family test constants."""
 
 # Fakers
diff --git a/tests/const_drive.py b/tests/const_drive.py
index d070af9..9987c1b 100644
--- a/tests/const_drive.py
+++ b/tests/const_drive.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Drive test constants."""
 
 
diff --git a/tests/const_findmyiphone.py b/tests/const_findmyiphone.py
index 28c6711..1b7998b 100644
--- a/tests/const_findmyiphone.py
+++ b/tests/const_findmyiphone.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Find my iPhone test constants."""
 from .const import CLIENT_ID
 from .const_account_family import (
@@ -94,7 +93,10 @@ FMI_FAMILY_WORKING = {
     },
     "alert": None,
     "userPreferences": {
-        "webPrefs": {"id": "web_prefs", "selectedDeviceId": "iPhone4,1",}
+        "webPrefs": {
+            "id": "web_prefs",
+            "selectedDeviceId": "iPhone4,1",
+        }
     },
     "content": [
         {
diff --git a/tests/const_login.py b/tests/const_login.py
index 8984fe6..1d02676 100644
--- a/tests/const_login.py
+++ b/tests/const_login.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Login test constants."""
 from .const_account_family import (
     FIRST_NAME,
diff --git a/tests/test_account.py b/tests/test_account.py
index 3cd0cfb..2274293 100644
--- a/tests/test_account.py
+++ b/tests/test_account.py
@@ -1,14 +1,12 @@
-# -*- coding: utf-8 -*-
 """Account service tests."""
 from unittest import TestCase
-from six import PY3
 
 from . import PyiCloudServiceMock
 from .const import AUTHENTICATED_USER, VALID_PASSWORD
 
 
 class AccountServiceTest(TestCase):
-    """"Account service tests"""
+    """ "Account service tests"""
 
     service = None
 
@@ -42,8 +40,7 @@ class AccountServiceTest(TestCase):
             assert device["modelSmallPhotoURL1x"]
             assert device["modelDisplayName"]
             # fmt: off
-            if PY3:
-                assert repr(device) == "<AccountDevice: {model: "+device.model_display_name+", name: "+device.name+"}>"
+            assert repr(device) == "<AccountDevice: {model: "+device.model_display_name+", name: "+device.name+"}>"
             # fmt: on
 
     def test_family(self):
@@ -72,8 +69,7 @@ class AccountServiceTest(TestCase):
         """Tests storage."""
         assert self.service.storage
         # fmt: off
-        if PY3:
-            assert repr(self.service.storage) == "<AccountStorage: {usage: 43.75% used of 5368709120 bytes, usages_by_media: OrderedDict([('photos', <AccountStorageUsageForMedia: {key: photos, usage: 0 bytes}>), ('backup', <AccountStorageUsageForMedia: {key: backup, usage: 799008186 bytes}>), ('docs', <AccountStorageUsageForMedia: {key: docs, usage: 449092146 bytes}>), ('mail', <AccountStorageUsageForMedia: {key: mail, usage: 1101522944 bytes}>)])}>"
+        assert repr(self.service.storage) == "<AccountStorage: {usage: 43.75% used of 5368709120 bytes, usages_by_media: OrderedDict([('photos', <AccountStorageUsageForMedia: {key: photos, usage: 0 bytes}>), ('backup', <AccountStorageUsageForMedia: {key: backup, usage: 799008186 bytes}>), ('docs', <AccountStorageUsageForMedia: {key: docs, usage: 449092146 bytes}>), ('mail', <AccountStorageUsageForMedia: {key: mail, usage: 1101522944 bytes}>)])}>"
         # fmt: on
 
     def test_storage_usage(self):
diff --git a/tests/test_cmdline.py b/tests/test_cmdline.py
index 42c2509..9f0d556 100644
--- a/tests/test_cmdline.py
+++ b/tests/test_cmdline.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Cmdline tests."""
 from pyicloud import cmdline
 from . import PyiCloudServiceMock
@@ -6,15 +5,10 @@ from .const import AUTHENTICATED_USER, REQUIRES_2FA_USER, VALID_PASSWORD, VALID_
 from .const_findmyiphone import FMI_FAMILY_WORKING
 
 import os
-from six import PY2
 import pickle
 import pytest
 from unittest import TestCase
-
-if PY2:
-    from mock import patch
-else:
-    from unittest.mock import patch  # pylint: disable=no-name-in-module,import-error
+from unittest.mock import patch
 
 
 class TestCmdline(TestCase):
diff --git a/tests/test_drive.py b/tests/test_drive.py
index 398ca8a..a6356bf 100644
--- a/tests/test_drive.py
+++ b/tests/test_drive.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Drive service tests."""
 from unittest import TestCase
 from . import PyiCloudServiceMock
@@ -7,7 +6,7 @@ import pytest
 
 # pylint: disable=pointless-statement
 class DriveServiceTest(TestCase):
-    """"Drive service tests"""
+    """ "Drive service tests"""
 
     service = None
 
@@ -62,7 +61,7 @@ class DriveServiceTest(TestCase):
         assert folder.date_changed is None
         assert folder.date_modified is None
         assert folder.date_last_open is None
-        assert folder.dir() == [u"Document scanné 2.pdf", "Scanned document 1.pdf"]
+        assert folder.dir() == ["Document scanné 2.pdf", "Scanned document 1.pdf"]
 
     def test_subfolder_file(self):
         """Test the /pyiCloud/Test/Scanned document 1.pdf file."""
diff --git a/tests/test_findmyiphone.py b/tests/test_findmyiphone.py
index 252a4f1..1999f3a 100644
--- a/tests/test_findmyiphone.py
+++ b/tests/test_findmyiphone.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """Find My iPhone service tests."""
 from unittest import TestCase
 from . import PyiCloudServiceMock
@@ -6,7 +5,7 @@ from .const import AUTHENTICATED_USER, VALID_PASSWORD
 
 
 class FindMyiPhoneServiceTest(TestCase):
-    """"Find My iPhone service tests"""
+    """ "Find My iPhone service tests"""
 
     service = None
 
diff --git a/tox.ini b/tox.ini
index ab61342..d5cfb3d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py36, py37, py38, lint
+envlist = py36, py37, py38, py39, py310, lint
 skip_missing_interpreters = True
 
 [gh-actions]
@@ -7,6 +7,8 @@ python =
     3.6: py36, lint
     3.7: py37
     3.8: py38
+    3.9: py39
+    3.10: py310
 
 [testenv]
 deps =
@@ -15,7 +17,6 @@ commands =
     {envbindir}/pytest
 
 [testenv:lint]
-basepython = python3
 ignore_errors = True
 commands =
     black --check --fast .