diff --git a/scripts/monitor_dbus_signals.py b/scripts/monitor_dbus_signals.py
index fe6ac4b..80fd0f4 100755
--- a/scripts/monitor_dbus_signals.py
+++ b/scripts/monitor_dbus_signals.py
@@ -18,12 +18,10 @@
 with respect to their properties.
 """
 
-# isort: STDLIB
 import os
 import xml.etree.ElementTree as ET
 from typing import List
 
-# isort: THIRDPARTY
 import dbus
 
 _INTERFACE_RE = None
@@ -250,18 +248,15 @@ def __repr__(self):
 
 
 try:
-    # isort: STDLIB
     import argparse
     import re
     import sys
     import time
     from enum import Enum
 
-    # isort: THIRDPARTY
     import dbus.mainloop.glib
     from gi.repository import GLib
 
-    # isort: FIRSTPARTY
     from dbus_python_client_gen import make_class
 
     class EmitsChangedSignal(Enum):
diff --git a/scripts/monitor_metadata.py b/scripts/monitor_metadata.py
index 7d43531..4a63763 100755
--- a/scripts/monitor_metadata.py
+++ b/scripts/monitor_metadata.py
@@ -17,17 +17,14 @@
 Stash Stratis metadata for a specific pool.
 """
 
-# isort: STDLIB
 import argparse
 import datetime
 import os
 import time
 import xml.etree.ElementTree as ET
 
-# isort: THIRDPARTY
 import dbus
 
-# isort: FIRSTPARTY
 from dbus_python_client_gen import make_class
 
 _SPECS = {
diff --git a/setup.py b/setup.py
index 8183dfe..17fb511 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,6 @@
 Python packaging file for setup tools.
 """
 
-# isort: THIRDPARTY
 import setuptools
 
 setuptools.setup()
diff --git a/stratis_cli_cert.py b/stratis_cli_cert.py
index 5908539..c56d59e 100644
--- a/stratis_cli_cert.py
+++ b/stratis_cli_cert.py
@@ -15,14 +15,12 @@
 Tests of the stratis CLI.
 """
 
-# isort: STDLIB
 import argparse
 import os
 import subprocess
 import sys
 import unittest
 
-# isort: LOCAL
 from testlib.dbus import StratisDbus, fs_n, p_n
 from testlib.infra import (
     DbusMonitor,
diff --git a/stratisd_cert.py b/stratisd_cert.py
index 3645d85..6ce83a2 100644
--- a/stratisd_cert.py
+++ b/stratisd_cert.py
@@ -15,7 +15,6 @@
 Tests of stratisd.
 """
 
-# isort: STDLIB
 import argparse
 import json
 import os
@@ -24,10 +23,8 @@
 import unittest
 from tempfile import NamedTemporaryFile
 
-# isort: THIRDPARTY
 import dbus
 
-# isort: LOCAL
 from testlib.dbus import StratisDbus, fs_n, p_n
 from testlib.infra import (
     DbusMonitor,
diff --git a/test_harness.py b/test_harness.py
index 67bcd88..e32b466 100644
--- a/test_harness.py
+++ b/test_harness.py
@@ -15,7 +15,6 @@
 Simple test harness for running test scripts on loopbacked devices.
 """
 
-# isort: STDLIB
 import argparse
 import itertools
 import logging
@@ -23,7 +22,6 @@
 import subprocess
 import tempfile
 
-# isort: LOCAL
 from testlib.infra import PostTestCheck
 
 _LOSETUP_BIN = "/usr/sbin/losetup"
diff --git a/testlib/dbus.py b/testlib/dbus.py
index 95d6bc6..50cb8be 100644
--- a/testlib/dbus.py
+++ b/testlib/dbus.py
@@ -15,10 +15,8 @@
 DBus methods for blackbox testing.
 """
 
-# isort: STDLIB
 import os
 
-# isort: THIRDPARTY
 import dbus
 
 from .utils import random_string
diff --git a/testlib/infra.py b/testlib/infra.py
index b9d14c8..bc14249 100644
--- a/testlib/infra.py
+++ b/testlib/infra.py
@@ -15,7 +15,6 @@
 Methods and classes that do infrastructure tasks.
 """
 
-# isort: STDLIB
 import base64
 import fnmatch
 import json
@@ -30,7 +29,6 @@
 from pathlib import Path
 from tempfile import NamedTemporaryFile
 
-# isort: THIRDPARTY
 import dbus
 
 from .dbus import StratisDbus, manager_interfaces
diff --git a/testlib/utils.py b/testlib/utils.py
index 464bec4..faa950e 100644
--- a/testlib/utils.py
+++ b/testlib/utils.py
@@ -15,7 +15,6 @@
 Utility functions for blackbox testing.
 """
 
-# isort: STDLIB
 import os
 import random
 import string
@@ -23,7 +22,6 @@
 from subprocess import PIPE, Popen, run
 from tempfile import NamedTemporaryFile
 
-# isort: THIRDPARTY
 import psutil