diff --git a/changelogs/fragments/686_fix_deprecated_imports.yml b/changelogs/fragments/686_fix_deprecated_imports.yml
new file mode 100644
index 0000000..779021b
--- /dev/null
+++ b/changelogs/fragments/686_fix_deprecated_imports.yml
@@ -0,0 +1,28 @@
+---
+minor_changes:
+  - mount - fix deprecated ``ansible.module_utils._text`` and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/action/patch.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/action/synchronize.py - fix deprecated ``ansible.module_utils._text``, ``ansible.module_utils.common._collections_compat``, and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/callback/cgroup_perf_recap.py - fix deprecated ``ansible.module_utils._text`` and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/callback/json.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/callback/jsonl.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/callback/profile_roles.py - fix deprecated ``ansible.module_utils.six`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/callback/profile_tasks.py - fix deprecated ``ansible.module_utils.six`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/acl.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/authorized_key.py - fix deprecated ``ansible.module_utils._text`` and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/firewalld_info.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/patch.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/rhel_rpm_ostree.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/rpm_ostree_upgrade.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/seboolean.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/synchronize.py - fix deprecated ``ansible.module_utils._text`` and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/modules/sysctl.py - fix deprecated ``ansible.module_utils._text`` and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/shell/csh.py - fix deprecated ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - plugins/shell/fish.py - fix deprecated ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/mock/loader.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/mock/procenv.py - fix deprecated ``ansible.module_utils._text`` and ``ansible.module_utils.six`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/mock/vault_helper.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/mock/yaml_helper.py - fix deprecated ``ansible.module_utils.six`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/modules/conftest.py - fix deprecated ``ansible.module_utils._text``, ``ansible.module_utils.six``, and ``ansible.module_utils.common._collections_compat`` imports (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/modules/system/test_mount.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
+  - tests/unit/modules/utils.py - fix deprecated ``ansible.module_utils._text`` import (https://github.com/ansible-collections/ansible.posix/issues/686).
diff --git a/plugins/action/patch.py b/plugins/action/patch.py
index 3b477d7..ea82ed6 100644
--- a/plugins/action/patch.py
+++ b/plugins/action/patch.py
@@ -21,7 +21,7 @@ __metaclass__ = type
 import os
 
 from ansible.errors import AnsibleError, AnsibleAction, _AnsibleActionDone, AnsibleActionFail
-from ansible.module_utils._text import to_native
+from ansible.module_utils.common.text.converters import to_native
 from ansible.module_utils.parsing.convert_bool import boolean
 from ansible.plugins.action import ActionBase
 
diff --git a/plugins/action/synchronize.py b/plugins/action/synchronize.py
index a171a2b..8f857c0 100644
--- a/plugins/action/synchronize.py
+++ b/plugins/action/synchronize.py
@@ -18,12 +18,11 @@ from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
 import os.path
+from collections.abc import MutableSequence
+from shlex import quote as shlex_quote
 
 from ansible import constants as C
-from ansible.module_utils.six import string_types
-from ansible.module_utils.six.moves import shlex_quote
-from ansible.module_utils._text import to_text
-from ansible.module_utils.common._collections_compat import MutableSequence
+from ansible.module_utils.common.text.converters import to_text
 from ansible.module_utils.parsing.convert_bool import boolean
 from ansible.plugins.action import ActionBase
 from ansible.plugins.loader import connection_loader
@@ -417,7 +416,7 @@ class ActionModule(ActionBase):
             # Replicate what we do in the module argumentspec handling for lists
             if not isinstance(_tmp_args.get('rsync_opts'), MutableSequence):
                 tmp_rsync_opts = _tmp_args.get('rsync_opts', [])
-                if isinstance(tmp_rsync_opts, string_types):
+                if isinstance(tmp_rsync_opts, str):
                     tmp_rsync_opts = tmp_rsync_opts.split(',')
                 elif isinstance(tmp_rsync_opts, (int, float)):
                     tmp_rsync_opts = [to_text(tmp_rsync_opts)]
diff --git a/plugins/callback/cgroup_perf_recap.py b/plugins/callback/cgroup_perf_recap.py
index 6721a03..58a4f37 100644
--- a/plugins/callback/cgroup_perf_recap.py
+++ b/plugins/callback/cgroup_perf_recap.py
@@ -141,8 +141,7 @@ from abc import ABCMeta, abstractmethod
 
 from functools import partial
 
-from ansible.module_utils._text import to_bytes, to_text
-from ansible.module_utils.six import with_metaclass
+from ansible.module_utils.common.text.converters import to_bytes, to_text
 from ansible.parsing.ajson import AnsibleJSONEncoder
 from ansible.plugins.callback import CallbackBase
 
@@ -158,7 +157,7 @@ def dict_fromkeys(keys, default=None):
     return d
 
 
-class BaseProf(with_metaclass(ABCMeta, threading.Thread)):
+class BaseProf(threading.Thread, metaclass=ABCMeta):
     def __init__(self, path, obj=None, writer=None):
         threading.Thread.__init__(self)  # pylint: disable=non-parent-init-called
         self.obj = obj
diff --git a/plugins/callback/json.py b/plugins/callback/json.py
index 6f86bd1..1dcb6bb 100644
--- a/plugins/callback/json.py
+++ b/plugins/callback/json.py
@@ -48,7 +48,7 @@ import json
 from functools import partial
 
 from ansible.inventory.host import Host
-from ansible.module_utils._text import to_text
+from ansible.module_utils.common.text.converters import to_text
 from ansible.parsing.ajson import AnsibleJSONEncoder
 from ansible.plugins.callback import CallbackBase
 
diff --git a/plugins/callback/jsonl.py b/plugins/callback/jsonl.py
index 1e03163..2d45d15 100644
--- a/plugins/callback/jsonl.py
+++ b/plugins/callback/jsonl.py
@@ -50,7 +50,7 @@ import copy
 from functools import partial
 
 from ansible.inventory.host import Host
-from ansible.module_utils._text import to_text
+from ansible.module_utils.common.text.converters import to_text
 from ansible.parsing.ajson import AnsibleJSONEncoder
 from ansible.plugins.callback import CallbackBase
 
diff --git a/plugins/callback/profile_roles.py b/plugins/callback/profile_roles.py
index 4d58014..d5d1adc 100644
--- a/plugins/callback/profile_roles.py
+++ b/plugins/callback/profile_roles.py
@@ -33,7 +33,7 @@ import collections
 import time
 
 from ansible.plugins.callback import CallbackBase
-from ansible.module_utils.six.moves import reduce
+from functools import reduce
 
 # define start time
 t0 = tn = time.time()
diff --git a/plugins/callback/profile_tasks.py b/plugins/callback/profile_tasks.py
index 2945bf9..4b7783e 100644
--- a/plugins/callback/profile_tasks.py
+++ b/plugins/callback/profile_tasks.py
@@ -86,7 +86,7 @@ import collections
 
 from datetime import datetime
 
-from ansible.module_utils.six.moves import reduce
+from functools import reduce
 from ansible.plugins.callback import CallbackBase
 
 
diff --git a/plugins/modules/acl.py b/plugins/modules/acl.py
index 4cc94e7..56e8de8 100644
--- a/plugins/modules/acl.py
+++ b/plugins/modules/acl.py
@@ -147,7 +147,7 @@ import os
 import platform
 
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_native
+from ansible.module_utils.common.text.converters import to_native
 
 
 def split_entry(entry):
diff --git a/plugins/modules/authorized_key.py b/plugins/modules/authorized_key.py
index d712a10..5908610 100644
--- a/plugins/modules/authorized_key.py
+++ b/plugins/modules/authorized_key.py
@@ -229,10 +229,17 @@ import errno
 import traceback
 from operator import itemgetter
 
-from ansible.module_utils._text import to_native
+# TODO(Python2): urllib.parse is available in Python 3. This module may run on
+# target hosts with Python 2.7 (e.g., older RHEL systems in CI integration tests).
+# Remove the try/except fallback to urlparse when Python 2 support is dropped.
+try:
+    from urllib.parse import urlparse
+except ImportError:
+    from urlparse import urlparse
+
 from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.common.text.converters import to_native
 from ansible.module_utils.urls import fetch_url
-from ansible.module_utils.six.moves.urllib.parse import urlparse
 
 
 class keydict(dict):
diff --git a/plugins/modules/firewalld_info.py b/plugins/modules/firewalld_info.py
index 0da6dd3..94654ee 100644
--- a/plugins/modules/firewalld_info.py
+++ b/plugins/modules/firewalld_info.py
@@ -210,7 +210,7 @@ firewalld_info:
 '''
 
 from ansible.module_utils.basic import AnsibleModule, missing_required_lib
-from ansible.module_utils._text import to_native
+from ansible.module_utils.common.text.converters import to_native
 from ansible_collections.ansible.posix.plugins.module_utils._respawn import respawn_module, HAS_RESPAWN_UTIL
 from ansible_collections.ansible.posix.plugins.module_utils.version import StrictVersion
 
diff --git a/plugins/modules/mount.py b/plugins/modules/mount.py
index 6e2425b..682fd4c 100644
--- a/plugins/modules/mount.py
+++ b/plugins/modules/mount.py
@@ -225,8 +225,7 @@ import platform
 
 from ansible.module_utils.basic import AnsibleModule
 from ansible_collections.ansible.posix.plugins.module_utils.mount import ismount
-from ansible.module_utils.six import iteritems
-from ansible.module_utils._text import to_bytes, to_native
+from ansible.module_utils.common.text.converters import to_bytes, to_native
 from ansible.module_utils.parsing.convert_bool import boolean
 
 
@@ -279,7 +278,7 @@ def _set_mount_save_old(module, args):
     old_lines = []
     exists = False
     changed = False
-    escaped_args = dict([(k, _escape_fstab(v)) for k, v in iteritems(args)])
+    escaped_args = dict([(k, _escape_fstab(v)) for k, v in args.items()])
     new_line = '%(src)s %(name)s %(fstype)s %(opts)s %(dump)s %(passno)s\n'
 
     if platform.system() == 'SunOS':
diff --git a/plugins/modules/patch.py b/plugins/modules/patch.py
index 39744a7..2ecd262 100644
--- a/plugins/modules/patch.py
+++ b/plugins/modules/patch.py
@@ -106,7 +106,7 @@ import os
 import platform
 from traceback import format_exc
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_native
+from ansible.module_utils.common.text.converters import to_native
 
 
 class PatchError(Exception):
diff --git a/plugins/modules/rhel_rpm_ostree.py b/plugins/modules/rhel_rpm_ostree.py
index 0aafb54..dfab26a 100644
--- a/plugins/modules/rhel_rpm_ostree.py
+++ b/plugins/modules/rhel_rpm_ostree.py
@@ -73,7 +73,7 @@ import os
 import traceback
 
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_text
+from ansible.module_utils.common.text.converters import to_text
 
 
 def locally_installed(module, pkgname):
diff --git a/plugins/modules/rpm_ostree_upgrade.py b/plugins/modules/rpm_ostree_upgrade.py
index 16689ca..40f9720 100644
--- a/plugins/modules/rpm_ostree_upgrade.py
+++ b/plugins/modules/rpm_ostree_upgrade.py
@@ -71,7 +71,7 @@ import os
 import traceback
 
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_native, to_text
+from ansible.module_utils.common.text.converters import to_native, to_text
 
 
 def rpm_ostree_transaction(module):
diff --git a/plugins/modules/seboolean.py b/plugins/modules/seboolean.py
index 8580c62..a23c473 100644
--- a/plugins/modules/seboolean.py
+++ b/plugins/modules/seboolean.py
@@ -73,7 +73,7 @@ except ImportError:
     HAVE_SEMANAGE = False
 
 from ansible.module_utils.basic import AnsibleModule, missing_required_lib
-from ansible.module_utils._text import to_text
+from ansible.module_utils.common.text.converters import to_text
 from ansible_collections.ansible.posix.plugins.module_utils._respawn import respawn_module, HAS_RESPAWN_UTIL
 
 
diff --git a/plugins/modules/synchronize.py b/plugins/modules/synchronize.py
index d65e08f..37b080a 100644
--- a/plugins/modules/synchronize.py
+++ b/plugins/modules/synchronize.py
@@ -367,9 +367,16 @@ EXAMPLES = r'''
 import os
 import errno
 
+# TODO(Python2): shlex.quote was added in Python 3.3. This module may run on
+# target hosts with Python 2.7 (e.g., older RHEL systems in CI integration tests).
+# Remove the try/except fallback to pipes.quote when Python 2 support is dropped.
+try:
+    from shlex import quote as shlex_quote
+except ImportError:
+    from pipes import quote as shlex_quote
+
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_bytes, to_native
-from ansible.module_utils.six.moves import shlex_quote
+from ansible.module_utils.common.text.converters import to_bytes, to_native
 
 
 client_addr = None
diff --git a/plugins/modules/sysctl.py b/plugins/modules/sysctl.py
index 86712db..b85ac2d 100644
--- a/plugins/modules/sysctl.py
+++ b/plugins/modules/sysctl.py
@@ -110,9 +110,8 @@ import re
 import tempfile
 
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.six import string_types
+from ansible.module_utils.common.text.converters import to_native
 from ansible.module_utils.parsing.convert_bool import BOOLEANS_FALSE, BOOLEANS_TRUE
-from ansible.module_utils._text import to_native
 
 
 class SysctlModule(object):
@@ -224,7 +223,7 @@ class SysctlModule(object):
                 return '1'
             else:
                 return '0'
-        elif isinstance(value, string_types):
+        elif isinstance(value, str):
             if value.lower() in BOOLEANS_TRUE:
                 return '1'
             elif value.lower() in BOOLEANS_FALSE:
diff --git a/plugins/shell/csh.py b/plugins/shell/csh.py
index 9baae25..3b2e28f 100644
--- a/plugins/shell/csh.py
+++ b/plugins/shell/csh.py
@@ -13,8 +13,7 @@ DOCUMENTATION = '''
       - shell_common
 '''
 
-from ansible.module_utils.six import text_type
-from ansible.module_utils.six.moves import shlex_quote
+from shlex import quote as shlex_quote
 from ansible.plugins.shell import ShellBase
 
 
@@ -43,5 +42,5 @@ class ShellModule(ShellBase):
         ret = []
         # All the -u options must be first, so we process them first
         ret += ['-u %s' % k for k, v in kwargs.items() if v is None]
-        ret += ['%s=%s' % (k, shlex_quote(text_type(v))) for k, v in kwargs.items() if v is not None]
+        ret += ['%s=%s' % (k, shlex_quote(str(v))) for k, v in kwargs.items() if v is not None]
         return 'env %s' % ' '.join(ret)
diff --git a/plugins/shell/fish.py b/plugins/shell/fish.py
index b96efa5..43b1463 100644
--- a/plugins/shell/fish.py
+++ b/plugins/shell/fish.py
@@ -13,8 +13,7 @@ DOCUMENTATION = '''
       - shell_common
 '''
 
-from ansible.module_utils.six import text_type
-from ansible.module_utils.six.moves import shlex_quote
+from shlex import quote as shlex_quote
 from ansible.plugins.shell.sh import ShellModule as ShModule
 
 
@@ -42,7 +41,7 @@ class ShellModule(ShModule):
             if v is None:
                 ret.append('set -e %s;' % k)
             else:
-                ret.append('set -lx %s %s;' % (k, shlex_quote(text_type(v))))
+                ret.append('set -lx %s %s;' % (k, shlex_quote(str(v))))
         return ' '.join(ret)
 
     def build_module_command(self, env_string, shebang, cmd, arg_path=None):
diff --git a/tests/sanity/ignore-2.21.txt b/tests/sanity/ignore-2.21.txt
index 9b5e162..3cf68c0 100644
--- a/tests/sanity/ignore-2.21.txt
+++ b/tests/sanity/ignore-2.21.txt
@@ -1,10 +1 @@
 tests/utils/shippable/timing.py shebang
-plugins/action/synchronize.py pylint:ansible-bad-import-from
-plugins/callback/cgroup_perf_recap.py pylint:ansible-bad-import-from
-plugins/modules/mount.py pylint:ansible-bad-import-from
-plugins/modules/sysctl.py pylint:ansible-bad-import-from
-plugins/shell/csh.py pylint:ansible-bad-import-from
-plugins/shell/fish.py pylint:ansible-bad-import-from
-tests/unit/mock/procenv.py pylint:ansible-bad-import-from
-tests/unit/mock/yaml_helper.py pylint:ansible-bad-import-from
-tests/unit/modules/conftest.py pylint:ansible-bad-import-from
diff --git a/tests/unit/mock/loader.py b/tests/unit/mock/loader.py
index edeac45..ed59720 100644
--- a/tests/unit/mock/loader.py
+++ b/tests/unit/mock/loader.py
@@ -23,7 +23,7 @@ import os
 
 from ansible.errors import AnsibleParserError
 from ansible.parsing.dataloader import DataLoader
-from ansible.module_utils._text import to_bytes, to_text
+from ansible.module_utils.common.text.converters import to_bytes, to_text
 
 
 class DictDataLoader(DataLoader):
diff --git a/tests/unit/mock/procenv.py b/tests/unit/mock/procenv.py
index 4740452..f1541a8 100644
--- a/tests/unit/mock/procenv.py
+++ b/tests/unit/mock/procenv.py
@@ -26,8 +26,7 @@ import json
 from contextlib import contextmanager
 from io import BytesIO, StringIO
 from ansible_collections.ansible.posix.tests.unit.compat import unittest
-from ansible.module_utils.six import PY3
-from ansible.module_utils._text import to_bytes
+from ansible.module_utils.common.text.converters import to_bytes
 
 
 @contextmanager
@@ -38,11 +37,8 @@ def swap_stdin_and_argv(stdin_data='', argv_data=tuple()):
     real_stdin = sys.stdin
     real_argv = sys.argv
 
-    if PY3:
-        fake_stream = StringIO(stdin_data)
-        fake_stream.buffer = BytesIO(to_bytes(stdin_data))
-    else:
-        fake_stream = BytesIO(to_bytes(stdin_data))
+    fake_stream = StringIO(stdin_data)
+    fake_stream.buffer = BytesIO(to_bytes(stdin_data))
 
     try:
         sys.stdin = fake_stream
@@ -61,10 +57,7 @@ def swap_stdout():
     """
     old_stdout = sys.stdout
 
-    if PY3:
-        fake_stream = StringIO()
-    else:
-        fake_stream = BytesIO()
+    fake_stream = StringIO()
 
     try:
         sys.stdout = fake_stream
diff --git a/tests/unit/mock/vault_helper.py b/tests/unit/mock/vault_helper.py
index dcce9c7..5b2fdd2 100644
--- a/tests/unit/mock/vault_helper.py
+++ b/tests/unit/mock/vault_helper.py
@@ -15,7 +15,7 @@
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
-from ansible.module_utils._text import to_bytes
+from ansible.module_utils.common.text.converters import to_bytes
 
 from ansible.parsing.vault import VaultSecret
 
diff --git a/tests/unit/mock/yaml_helper.py b/tests/unit/mock/yaml_helper.py
index a4c2d6d..c6e0f33 100644
--- a/tests/unit/mock/yaml_helper.py
+++ b/tests/unit/mock/yaml_helper.py
@@ -5,7 +5,6 @@ __metaclass__ = type
 import io
 import yaml
 
-from ansible.module_utils.six import PY3
 from ansible.parsing.yaml.loader import AnsibleLoader
 from ansible.parsing.yaml.dumper import AnsibleDumper
 
@@ -20,17 +19,11 @@ class YamlTestUtils(object):
 
     def _dump_stream(self, obj, stream, dumper=None):
         """Dump to a py2-unicode or py3-string stream."""
-        if PY3:
-            return yaml.dump(obj, stream, Dumper=dumper)
-        else:
-            return yaml.dump(obj, stream, Dumper=dumper, encoding=None)
+        return yaml.dump(obj, stream, Dumper=dumper)
 
     def _dump_string(self, obj, dumper=None):
         """Dump to a py2-unicode or py3-string"""
-        if PY3:
-            return yaml.dump(obj, Dumper=dumper)
-        else:
-            return yaml.dump(obj, Dumper=dumper, encoding=None)
+        return yaml.dump(obj, Dumper=dumper)
 
     def _dump_load_cycle(self, obj):
         # Each pass though a dump or load revs the 'generation'
@@ -88,12 +81,8 @@ class YamlTestUtils(object):
         stream_obj_from_stream = io.StringIO()
         stream_obj_from_string = io.StringIO()
 
-        if PY3:
-            yaml.dump(obj_from_stream, stream_obj_from_stream, Dumper=AnsibleDumper)
-            yaml.dump(obj_from_stream, stream_obj_from_string, Dumper=AnsibleDumper)
-        else:
-            yaml.dump(obj_from_stream, stream_obj_from_stream, Dumper=AnsibleDumper, encoding=None)
-            yaml.dump(obj_from_stream, stream_obj_from_string, Dumper=AnsibleDumper, encoding=None)
+        yaml.dump(obj_from_stream, stream_obj_from_stream, Dumper=AnsibleDumper)
+        yaml.dump(obj_from_stream, stream_obj_from_string, Dumper=AnsibleDumper)
 
         yaml_string_stream_obj_from_stream = stream_obj_from_stream.getvalue()
         yaml_string_stream_obj_from_string = stream_obj_from_string.getvalue()
@@ -101,12 +90,8 @@ class YamlTestUtils(object):
         stream_obj_from_stream.seek(0)
         stream_obj_from_string.seek(0)
 
-        if PY3:
-            yaml_string_obj_from_stream = yaml.dump(obj_from_stream, Dumper=AnsibleDumper)
-            yaml_string_obj_from_string = yaml.dump(obj_from_string, Dumper=AnsibleDumper)
-        else:
-            yaml_string_obj_from_stream = yaml.dump(obj_from_stream, Dumper=AnsibleDumper, encoding=None)
-            yaml_string_obj_from_string = yaml.dump(obj_from_string, Dumper=AnsibleDumper, encoding=None)
+        yaml_string_obj_from_stream = yaml.dump(obj_from_stream, Dumper=AnsibleDumper)
+        yaml_string_obj_from_string = yaml.dump(obj_from_string, Dumper=AnsibleDumper)
 
         assert yaml_string == yaml_string_obj_from_stream
         assert yaml_string == yaml_string_obj_from_stream == yaml_string_obj_from_string
diff --git a/tests/unit/modules/conftest.py b/tests/unit/modules/conftest.py
index 6eb5883..01b5593 100644
--- a/tests/unit/modules/conftest.py
+++ b/tests/unit/modules/conftest.py
@@ -9,14 +9,14 @@ import json
 
 import pytest
 
-from ansible.module_utils.six import string_types
-from ansible.module_utils._text import to_bytes
-from ansible.module_utils.common._collections_compat import MutableMapping
+from collections.abc import MutableMapping
+
+from ansible.module_utils.common.text.converters import to_bytes
 
 
 @pytest.fixture
 def patch_ansible_module(request, mocker):
-    if isinstance(request.param, string_types):
+    if isinstance(request.param, str):
         args = request.param
     elif isinstance(request.param, MutableMapping):
         if 'ANSIBLE_MODULE_ARGS' not in request.param:
diff --git a/tests/unit/modules/system/test_mount.py b/tests/unit/modules/system/test_mount.py
index 73086cc..b7390a1 100644
--- a/tests/unit/modules/system/test_mount.py
+++ b/tests/unit/modules/system/test_mount.py
@@ -7,7 +7,7 @@ import tempfile
 
 from ansible_collections.ansible.posix.tests.unit.compat import unittest
 from ansible_collections.ansible.posix.tests.unit.compat.mock import MagicMock
-from ansible.module_utils._text import to_bytes
+from ansible.module_utils.common.text.converters import to_bytes
 
 from ansible_collections.ansible.posix.plugins.modules.mount import (
     get_linux_mounts,
diff --git a/tests/unit/modules/utils.py b/tests/unit/modules/utils.py
index 342d528..bcfb91f 100644
--- a/tests/unit/modules/utils.py
+++ b/tests/unit/modules/utils.py
@@ -7,7 +7,7 @@ import json
 from ansible_collections.ansible.posix.tests.unit.compat import unittest
 from ansible_collections.ansible.posix.tests.unit.compat.mock import patch
 from ansible.module_utils import basic
-from ansible.module_utils._text import to_bytes
+from ansible.module_utils.common.text.converters import to_bytes
 
 
 def set_module_args(args):