diff --git a/devlib/collector/dmesg.py b/devlib/collector/dmesg.py
index 799a965..4d4ee60 100644
--- a/devlib/collector/dmesg.py
+++ b/devlib/collector/dmesg.py
@@ -1,4 +1,4 @@
-#    Copyright 2019 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -19,7 +19,6 @@ from datetime import timedelta
 
 from devlib.collector import (CollectorBase, CollectorOutput,
                               CollectorOutputEntry)
-from devlib.target import KernelConfigTristate
 from devlib.exception import TargetStableError
 from devlib.utils.misc import memoized
 
diff --git a/devlib/collector/logcat.py b/devlib/collector/logcat.py
index 4485e5c..770c905 100644
--- a/devlib/collector/logcat.py
+++ b/devlib/collector/logcat.py
@@ -1,4 +1,4 @@
-#    Copyright 2018 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,7 +14,6 @@
 #
 
 import os
-import shutil
 
 from devlib.collector import (CollectorBase, CollectorOutput,
                               CollectorOutputEntry)
diff --git a/devlib/collector/serial_trace.py b/devlib/collector/serial_trace.py
index 5b538e7..7df9ab3 100644
--- a/devlib/collector/serial_trace.py
+++ b/devlib/collector/serial_trace.py
@@ -1,4 +1,4 @@
-#    Copyright 2018 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,8 +13,6 @@
 # limitations under the License.
 #
 
-import shutil
-from tempfile import NamedTemporaryFile
 from pexpect.exceptions import TIMEOUT
 
 from devlib.collector import (CollectorBase, CollectorOutput,
diff --git a/devlib/collector/systrace.py b/devlib/collector/systrace.py
index 538542e..4e29cf1 100644
--- a/devlib/collector/systrace.py
+++ b/devlib/collector/systrace.py
@@ -1,4 +1,4 @@
-#    Copyright 2018 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,9 +16,6 @@
 import os
 import subprocess
 
-from shutil import copyfile
-from tempfile import NamedTemporaryFile
-
 from devlib.collector import (CollectorBase, CollectorOutput,
                               CollectorOutputEntry)
 from devlib.exception import TargetStableError, HostError
diff --git a/devlib/connection.py b/devlib/connection.py
index a857a57..4609975 100644
--- a/devlib/connection.py
+++ b/devlib/connection.py
@@ -1,4 +1,4 @@
-#    Copyright 2019 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,13 +15,9 @@
 
 from abc import ABC, abstractmethod
 from contextlib import contextmanager, nullcontext
-from datetime import datetime
-from functools import partial
-from weakref import WeakSet
 from shlex import quote
 import os
 import signal
-import socket
 import subprocess
 import threading
 import time
diff --git a/devlib/host.py b/devlib/host.py
index ff8546c..f202fcc 100644
--- a/devlib/host.py
+++ b/devlib/host.py
@@ -1,4 +1,4 @@
-#    Copyright 2015-2017 ARM Limited
+#    Copyright 2015-2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import glob
 import os
 import signal
 import shutil
@@ -23,8 +22,7 @@ from getpass import getpass
 from shlex import quote
 
 from devlib.exception import (
-    TargetTransientError, TargetStableError,
-    TargetTransientCalledProcessError, TargetStableCalledProcessError
+    TargetStableError, TargetTransientCalledProcessError, TargetStableCalledProcessError
 )
 from devlib.utils.misc import check_output
 from devlib.connection import ConnectionBase, PopenBackgroundCommand
diff --git a/devlib/module/cpufreq.py b/devlib/module/cpufreq.py
index cf4d11d..2640a9a 100644
--- a/devlib/module/cpufreq.py
+++ b/devlib/module/cpufreq.py
@@ -1,4 +1,4 @@
-#    Copyright 2014-2018 ARM Limited
+#    Copyright 2014-2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from contextlib import contextmanager
-from operator import itemgetter
 
 from devlib.module import Module
 from devlib.exception import TargetStableError
diff --git a/devlib/platform/arm.py b/devlib/platform/arm.py
index fbe81af..6499ec8 100644
--- a/devlib/platform/arm.py
+++ b/devlib/platform/arm.py
@@ -1,4 +1,4 @@
-#    Copyright 2015-2018 ARM Limited
+#    Copyright 2015-2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,7 +13,6 @@
 # limitations under the License.
 #
 import os
-import sys
 import tempfile
 import time
 import pexpect
diff --git a/devlib/target.py b/devlib/target.py
index 5662186..7d17fe2 100644
--- a/devlib/target.py
+++ b/devlib/target.py
@@ -1,4 +1,4 @@
-#    Copyright 2018 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -25,7 +25,6 @@ import time
 import logging
 import posixpath
 import subprocess
-import sys
 import tarfile
 import tempfile
 import threading
@@ -35,7 +34,6 @@ import copy
 import inspect
 import itertools
 from collections import namedtuple, defaultdict
-from contextlib import contextmanager
 from past.builtins import long
 from past.types import basestring
 from numbers import Number
@@ -54,15 +52,14 @@ from devlib.platform import Platform
 from devlib.exception import (DevlibTransientError, TargetStableError,
                               TargetNotRespondingError, TimeoutError,
                               TargetTransientError, KernelConfigKeyError,
-                              TargetError, HostError, TargetCalledProcessError,
-                              TargetStableCalledProcessError)  # pylint: disable=redefined-builtin
+                              TargetError, HostError, TargetCalledProcessError)
 from devlib.utils.ssh import SshConnection
-from devlib.utils.android import AdbConnection, AndroidProperties, LogcatMonitor, adb_command, adb_disconnect, INTENT_FLAGS
+from devlib.utils.android import AdbConnection, AndroidProperties, LogcatMonitor, adb_command, INTENT_FLAGS
 from devlib.utils.misc import memoized, isiterable, convert_new_lines, groupby_value
 from devlib.utils.misc import commonprefix, merge_lists
 from devlib.utils.misc import ABI_MAP, get_cpu_name, ranges_to_list
 from devlib.utils.misc import batch_contextmanager, tls_property, _BoundTLSProperty, nullcontext
-from devlib.utils.misc import strip_bash_colors, safe_extract
+from devlib.utils.misc import safe_extract
 from devlib.utils.types import integer, boolean, bitmask, identifier, caseless_string, bytes_regex
 import devlib.utils.asyn as asyn
 
diff --git a/devlib/utils/csvutil.py b/devlib/utils/csvutil.py
index b696449..81818e1 100644
--- a/devlib/utils/csvutil.py
+++ b/devlib/utils/csvutil.py
@@ -1,4 +1,4 @@
-#    Copyright 2018 ARM Limited
+#    Copyright 2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -54,7 +54,6 @@ responsibility of the calling code to ensure that the file is closed properly.
 
 '''
 import csv
-import sys
 from contextlib import contextmanager
 
 
diff --git a/devlib/utils/misc.py b/devlib/utils/misc.py
index 58cf6ec..3657885 100644
--- a/devlib/utils/misc.py
+++ b/devlib/utils/misc.py
@@ -1,4 +1,4 @@
-#    Copyright 2013-2018 ARM Limited
+#    Copyright 2013-2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -22,23 +22,21 @@ from contextlib import contextmanager
 from functools import partial, reduce, wraps
 from itertools import groupby
 from operator import itemgetter
-from weakref import WeakKeyDictionary, WeakSet
+from weakref import WeakSet
 
 import ctypes
-import functools
 import logging
 import os
 import pkgutil
 import random
 import re
-import signal
 import string
 import subprocess
 import sys
 import threading
 import types
-import wrapt
 import warnings
+import wrapt
 
 
 try:
diff --git a/devlib/utils/serial_port.py b/devlib/utils/serial_port.py
index e827e98..c4915a9 100644
--- a/devlib/utils/serial_port.py
+++ b/devlib/utils/serial_port.py
@@ -1,4 +1,4 @@
-#    Copyright 2013-2018 ARM Limited
+#    Copyright 2013-2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,16 +13,13 @@
 # limitations under the License.
 #
 
-
 import time
 from contextlib import contextmanager
 from logging import Logger
 
 import serial
 
-# pylint: disable=import-error,wrong-import-position,ungrouped-imports,wrong-import-order
-import pexpect
-
+# pylint: disable=ungrouped-imports
 try:
     from pexpect import fdpexpect
 # pexpect < 4.0.0 does not have fdpexpect module
diff --git a/devlib/utils/ssh.py b/devlib/utils/ssh.py
index 45d629c..d05bb25 100644
--- a/devlib/utils/ssh.py
+++ b/devlib/utils/ssh.py
@@ -1,4 +1,4 @@
-#    Copyright 2014-2018 ARM Limited
+#    Copyright 2014-2024 ARM Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,7 +14,6 @@
 #
 
 
-import glob
 import os
 import stat
 import logging
@@ -22,13 +21,11 @@ import subprocess
 import re
 import threading
 import tempfile
-import shutil
 import socket
 import sys
 import time
 import atexit
 import contextlib
-import weakref
 import select
 import copy
 import functools
@@ -60,8 +57,7 @@ from devlib.exception import (HostError, TargetStableError, TargetNotRespondingE
 from devlib.utils.misc import (which, strip_bash_colors, check_output,
                                sanitize_cmd_template, memoized, redirect_streams)
 from devlib.utils.types import boolean
-from devlib.connection import (ConnectionBase, ParamikoBackgroundCommand, PopenBackgroundCommand,
-                               SSHTransferHandle)
+from devlib.connection import ConnectionBase, ParamikoBackgroundCommand, SSHTransferHandle
 
 
 DEFAULT_SSH_SUDO_COMMAND = "sudo -k -p ' ' -S -- sh -c {}"