diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6937157..b2b7d41 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v5.0.0
     hooks:
       - id: trailing-whitespace
       # Replaces or checks mixed line ending
@@ -19,12 +19,17 @@ repos:
       - id: check-yaml
         files: .*\.(yaml|yml)$
   - repo: https://opendev.org/openstack/hacking
-    rev: 6.1.0
+    rev: 7.0.0
     hooks:
       - id: hacking
         additional_dependencies: []
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.6
+    rev: 1.7.10
     hooks:
       - id: bandit
         args: ['-x', 'tests', '-s', 'B311,B404,B603,B606']
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v3.18.0
+    hooks:
+      - id: pyupgrade
+        args: [--py3-only]
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 87c6ed1..e605e00 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (C) 2020 Red Hat, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/oslo_concurrency/fixture/lockutils.py b/oslo_concurrency/fixture/lockutils.py
index e53816d..60d5e34 100644
--- a/oslo_concurrency/fixture/lockutils.py
+++ b/oslo_concurrency/fixture/lockutils.py
@@ -47,7 +47,7 @@ class LockFixture(fixtures.Fixture):
         self.mgr = lockutils.lock(name, lock_file_prefix, True)
 
     def setUp(self):
-        super(LockFixture, self).setUp()
+        super().setUp()
         self.addCleanup(self.mgr.__exit__, None, None, None)
         self.lock = self.mgr.__enter__()
 
@@ -72,7 +72,7 @@ class ExternalLockFixture(fixtures.Fixture):
     .. versionadded:: 0.3
     """
     def setUp(self):
-        super(ExternalLockFixture, self).setUp()
+        super().setUp()
         temp_dir = self.useFixture(fixtures.TempDir())
         conf = self.useFixture(config.Config(lockutils.CONF)).config
         conf(lock_path=temp_dir.path, group='oslo_concurrency')
diff --git a/oslo_concurrency/lockutils.py b/oslo_concurrency/lockutils.py
index b0ffaee..2111486 100644
--- a/oslo_concurrency/lockutils.py
+++ b/oslo_concurrency/lockutils.py
@@ -104,7 +104,7 @@ class ReaderWriterLock(fasteners.ReaderWriterLock):
 InterProcessLock = fasteners.InterProcessLock
 
 
-class FairLocks(object):
+class FairLocks:
     """A garbage collected container of fair locks.
 
     With a fair lock, contending lockers will get the lock in the order in
@@ -147,7 +147,7 @@ def internal_fair_lock(name):
     return _fair_locks.get(name)
 
 
-class Semaphores(object):
+class Semaphores:
     """A garbage collected container of semaphores.
 
     This collection internally uses a weak value dictionary so that when a
@@ -192,7 +192,7 @@ def _get_lock_path(name, lock_file_prefix, lock_path=None):
     name = name.replace(os.sep, '_')
     if lock_file_prefix:
         sep = '' if lock_file_prefix.endswith('-') else '-'
-        name = '%s%s%s' % (lock_file_prefix, sep, name)
+        name = '{}{}{}'.format(lock_file_prefix, sep, name)
 
     local_lock_path = lock_path or CONF.oslo_concurrency.lock_path
 
diff --git a/oslo_concurrency/processutils.py b/oslo_concurrency/processutils.py
index 99f48d1..af3d8bd 100644
--- a/oslo_concurrency/processutils.py
+++ b/oslo_concurrency/processutils.py
@@ -70,18 +70,18 @@ LOG = logging.getLogger(__name__)
 
 class InvalidArgumentError(Exception):
     def __init__(self, message=None):
-        super(InvalidArgumentError, self).__init__(message)
+        super().__init__(message)
 
 
 class UnknownArgumentError(Exception):
     def __init__(self, message=None):
-        super(UnknownArgumentError, self).__init__(message)
+        super().__init__(message)
 
 
 class ProcessExecutionError(Exception):
     def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
                  description=None):
-        super(ProcessExecutionError, self).__init__(
+        super().__init__(
             stdout, stderr, exit_code, cmd, description)
         self.exit_code = exit_code
         self.stderr = stderr
@@ -112,7 +112,7 @@ class ProcessExecutionError(Exception):
 
 class NoRootWrapSpecified(Exception):
     def __init__(self, message=None):
-        super(NoRootWrapSpecified, self).__init__(message)
+        super().__init__(message)
 
 
 def _subprocess_setup(on_preexec_fn):
@@ -146,7 +146,7 @@ LOG_FINAL_ERROR = LogErrors.FINAL
 LOG_DEFAULT_ERROR = LogErrors.DEFAULT
 
 
-class ProcessLimits(object):
+class ProcessLimits:
     """Resource limits on a process.
 
     Attributes:
@@ -192,7 +192,7 @@ class ProcessLimits(object):
         for limit in self._LIMITS:
             val = getattr(self, limit)
             if val is not None:
-                args.append("%s=%s" % (self._LIMITS[limit], val))
+                args.append("{}={}".format(self._LIMITS[limit], val))
         return args
 
 
diff --git a/oslo_concurrency/tests/unit/test_lockutils.py b/oslo_concurrency/tests/unit/test_lockutils.py
index ad312d2..993157b 100644
--- a/oslo_concurrency/tests/unit/test_lockutils.py
+++ b/oslo_concurrency/tests/unit/test_lockutils.py
@@ -68,7 +68,7 @@ def lock_files(handles_dir, out_queue):
                 lock_file(handle)
                 count += 1
                 unlock_file(handle)
-            except IOError:
+            except OSError:
                 os._exit(2)
             finally:
                 handle.close()
@@ -78,7 +78,7 @@ def lock_files(handles_dir, out_queue):
 class LockTestCase(test_base.BaseTestCase):
 
     def setUp(self):
-        super(LockTestCase, self).setUp()
+        super().setUp()
         self.config = self.useFixture(config.Config(lockutils.CONF)).config
 
     def test_synchronized_wrapped_function_metadata(self):
@@ -363,7 +363,7 @@ class LockTestCase(test_base.BaseTestCase):
 
 class FileBasedLockingTestCase(test_base.BaseTestCase):
     def setUp(self):
-        super(FileBasedLockingTestCase, self).setUp()
+        super().setUp()
         self.lock_dir = tempfile.mkdtemp()
 
     def test_lock_file_exists(self):
@@ -399,7 +399,7 @@ class FileBasedLockingTestCase(test_base.BaseTestCase):
                     lock1.trylock()
                     lock1.unlock()
                     time.sleep(0)
-                except IOError:
+                except OSError:
                     # This is what we expect to happen
                     break
             else:
@@ -415,7 +415,7 @@ class FileBasedLockingTestCase(test_base.BaseTestCase):
                     try:
                         lock2.trylock()
                         have_lock = True
-                    except IOError:
+                    except OSError:
                         pass
             finally:
                 # NOTE(bnemec): This is racy, but I don't want to add any
@@ -557,7 +557,7 @@ class FileBasedLockingTestCase(test_base.BaseTestCase):
 class LockutilsModuleTestCase(test_base.BaseTestCase):
 
     def setUp(self):
-        super(LockutilsModuleTestCase, self).setUp()
+        super().setUp()
         self.old_env = os.environ.get('OSLO_LOCK_PATH')
         if self.old_env is not None:
             del os.environ['OSLO_LOCK_PATH']
@@ -565,7 +565,7 @@ class LockutilsModuleTestCase(test_base.BaseTestCase):
     def tearDown(self):
         if self.old_env is not None:
             os.environ['OSLO_LOCK_PATH'] = self.old_env
-        super(LockutilsModuleTestCase, self).tearDown()
+        super().tearDown()
 
     def test_main(self):
         script = '\n'.join([
@@ -597,7 +597,7 @@ class LockutilsModuleTestCase(test_base.BaseTestCase):
 class TestLockFixture(test_base.BaseTestCase):
 
     def setUp(self):
-        super(TestLockFixture, self).setUp()
+        super().setUp()
         self.config = self.useFixture(config.Config(lockutils.CONF)).config
         self.tempdir = tempfile.mkdtemp()
 
@@ -606,7 +606,7 @@ class TestLockFixture(test_base.BaseTestCase):
 
     def tearDown(self):
         self._check_in_lock()
-        super(TestLockFixture, self).tearDown()
+        super().tearDown()
 
     def test_lock_fixture(self):
         # Setup lock fixture to test that teardown is inside the lock
@@ -619,7 +619,7 @@ class TestLockFixture(test_base.BaseTestCase):
 class TestGetLockPath(test_base.BaseTestCase):
 
     def setUp(self):
-        super(TestGetLockPath, self).setUp()
+        super().setUp()
         self.conf = self.useFixture(config.Config(lockutils.CONF)).conf
 
     def test_get_default(self):
diff --git a/oslo_concurrency/tests/unit/test_processutils.py b/oslo_concurrency/tests/unit/test_processutils.py
index 5d636c3..b4f1493 100644
--- a/oslo_concurrency/tests/unit/test_processutils.py
+++ b/oslo_concurrency/tests/unit/test_processutils.py
@@ -89,7 +89,7 @@ class UtilsTest(test_base.BaseTestCase):
         on_completion_callback = mock.Mock()
 
         def fake_communicate(*args, timeout=None):
-            raise IOError("Broken pipe")
+            raise OSError("Broken pipe")
 
         mock_comm.side_effect = fake_communicate
 
@@ -128,7 +128,7 @@ class UtilsTest(test_base.BaseTestCase):
         mock_comm.return_value = None
         mock_tpool.execute.return_value = mock_comm.return_value
 
-        fake_pinput = 'fake pinput'.encode('utf-8')
+        fake_pinput = b'fake pinput'
 
         with mock.patch.object(processutils, 'eventlet_patched',
                                use_eventlet):
@@ -240,7 +240,7 @@ exit 1
                               tmpfilename, tmpfilename2, attempts=10,
                               process_input=b'foo',
                               delay_on_retry=False)
-            fp = open(tmpfilename2, 'r')
+            fp = open(tmpfilename2)
             runs = fp.read()
             fp.close()
             self.assertNotEqual('failure', 'stdin did not '
@@ -320,7 +320,7 @@ grep foo
     # This test and the one below ensures that when communicate raises
     # an OSError, we do the right thing(s)
     def test_exception_on_communicate_error(self):
-        mock = self.useFixture(fixtures.MockPatch(
+        mock_comm = self.useFixture(fixtures.MockPatch(
             'subprocess.Popen.communicate',
             side_effect=OSError(errno.EAGAIN, 'fake-test')))
 
@@ -330,10 +330,10 @@ grep foo
                           'false',
                           check_exit_code=False)
 
-        self.assertEqual(1, mock.mock.call_count)
+        self.assertEqual(1, mock_comm.mock.call_count)
 
     def test_retry_on_communicate_error(self):
-        mock = self.useFixture(fixtures.MockPatch(
+        mock_comm = self.useFixture(fixtures.MockPatch(
             'subprocess.Popen.communicate',
             side_effect=OSError(errno.EAGAIN, 'fake-test')))
 
@@ -344,11 +344,11 @@ grep foo
                           check_exit_code=False,
                           attempts=5)
 
-        self.assertEqual(5, mock.mock.call_count)
+        self.assertEqual(5, mock_comm.mock.call_count)
 
     def _test_and_check_logging_communicate_errors(self, log_errors=None,
                                                    attempts=None):
-        mock = self.useFixture(fixtures.MockPatch(
+        mock_comm = self.useFixture(fixtures.MockPatch(
             'subprocess.Popen.communicate',
             side_effect=OSError(errno.EAGAIN, 'fake-test')))
 
@@ -367,7 +367,8 @@ grep foo
                           'false',
                           **kwargs)
 
-        self.assertEqual(attempts if attempts else 1, mock.mock.call_count)
+        self.assertEqual(attempts if attempts else 1,
+                         mock_comm.mock.call_count)
         self.assertIn('Got an OSError', fixture.output)
         self.assertIn('errno: %d' % errno.EAGAIN, fixture.output)
         self.assertIn("'/usr/bin/env false'", fixture.output)
@@ -530,7 +531,7 @@ grep foo
 
 class ProcessExecutionErrorLoggingTest(test_base.BaseTestCase):
     def setUp(self):
-        super(ProcessExecutionErrorLoggingTest, self).setUp()
+        super().setUp()
         self.tmpfilename = self.create_tempfiles(
             [["process_execution_error_logging_test",
               PROCESS_EXECUTION_ERROR_LOGGING_TEST]],
@@ -624,7 +625,7 @@ class TryCmdTestCase(test_base.BaseTestCase):
         self.assertEqual('', e)
 
 
-class FakeSshChannel(object):
+class FakeSshChannel:
     def __init__(self, rc):
         self.rc = rc
 
@@ -637,7 +638,7 @@ class FakeSshStream(io.BytesIO):
         self.channel = FakeSshChannel(rc)
 
 
-class FakeSshConnection(object):
+class FakeSshConnection:
     def __init__(self, rc, out=b'stdout', err=b'stderr'):
         self.rc = rc
         self.out = out
diff --git a/oslo_concurrency/watchdog.py b/oslo_concurrency/watchdog.py
index 7e48f20..01e98ba 100644
--- a/oslo_concurrency/watchdog.py
+++ b/oslo_concurrency/watchdog.py
@@ -64,7 +64,7 @@ def watch(logger, action, level=logging.DEBUG, after=5.0):
     watch.start()
 
     def log():
-        msg = "%s not completed after %0.3fs" % (action, watch.elapsed())
+        msg = "{} not completed after {:0.3f}s".format(action, watch.elapsed())
         logger.log(level, msg)
 
     timer = threading.Timer(after, log)
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index a3dd5fb..8ba2192 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at