diff --git a/cssutils/tests/basetest.py b/cssutils/tests/basetest.py
index 5a255755..ff628cbd 100644
--- a/cssutils/tests/basetest.py
+++ b/cssutils/tests/basetest.py
@@ -6,6 +6,11 @@
 import sys
 import unittest
 
+try:
+    from importlib import resources
+except ImportError:
+    import importlib_resources as resources
+
 import cssutils
 
 
@@ -27,9 +32,8 @@ def get_resource_filename(resource_name):
 
 def get_sheet_filename(sheet_name):
     """Get the filename for the given sheet."""
-    # Extract all sheets since they might use @import
-    sheet_dir = get_resource_filename('tests/sheets')
-    return os.path.join(sheet_dir, sheet_name)
+    # assume resources are on the file system
+    return resources.files('cssutils') / 'tests' / 'sheets' / sheet_name
 
 
 class BaseTestCase(unittest.TestCase):
diff --git a/examples/style.py b/examples/style.py
index 616277b2..0d8b7335 100644
--- a/examples/style.py
+++ b/examples/style.py
@@ -8,24 +8,14 @@
 """
 import codecs
 import cssutils
-import os
 import sys
 import webbrowser
 
-# lxml egg may be in a lib dir below this file (not in SVN though)
-sys.path.append(os.path.join(os.path.dirname(__file__), 'lib'))
-try:
-    import pkg_resources
-
-    pkg_resources.require('lxml')
-except pkg_resources.DistributionNotFound:
-    pass
-
 try:
     from lxml import etree
     from lxml.cssselect import CSSSelector
 except ImportError as e:
-    print('You need lxml for this example:', e)
+    print('lxml is required:', e)
     sys.exit(1)
 
 
diff --git a/setup.cfg b/setup.cfg
index 044e92f7..f5d20261 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,7 +27,6 @@ include_package_data = true
 python_requires = >=3.6
 install_requires =
 	importlib_metadata; python_version < "3.8"
-	setuptools
 setup_requires = setuptools_scm[toml] >= 3.4.1
 
 [options.packages.find]
@@ -59,6 +58,7 @@ testing =
 	mock
 	lxml
 	cssselect
+	importlib_resources; python_version < "3.9"
 
 docs =
 	# upstream