diff --git a/apptools/persistence/tests/test_file_path.py b/apptools/persistence/tests/test_file_path.py
index eeeb0856..dac6206d 100644
--- a/apptools/persistence/tests/test_file_path.py
+++ b/apptools/persistence/tests/test_file_path.py
@@ -19,7 +19,10 @@
 from io import BytesIO
 
 # 3rd party imports.
-from importlib_resources import files
+try:
+    from importlib.resources import files
+except ImportError:
+    from importlib_resources import files
 
 from apptools._testing.optional_dependencies import (
     numpy as np,
diff --git a/apptools/preferences/tests/test_preference_binding.py b/apptools/preferences/tests/test_preference_binding.py
index adc27514..d222a0ce 100644
--- a/apptools/preferences/tests/test_preference_binding.py
+++ b/apptools/preferences/tests/test_preference_binding.py
@@ -17,7 +17,10 @@
 from os.path import join
 
 # Major package imports.
-from importlib_resources import files
+try:
+    from importlib.resources import files
+except ImportError:
+    from importlib_resources import files
 
 # Enthought library imports.
 from apptools.preferences.api import Preferences
diff --git a/apptools/preferences/tests/test_preferences.py b/apptools/preferences/tests/test_preferences.py
index 7203ee80..5031e971 100644
--- a/apptools/preferences/tests/test_preferences.py
+++ b/apptools/preferences/tests/test_preferences.py
@@ -17,7 +17,10 @@
 from os.path import join
 
 # Major package imports.
-from importlib_resources import files
+try:
+    from importlib.resources import files
+except ImportError:
+    from importlib_resources import files
 
 # Enthought library imports.
 from apptools.preferences.api import Preferences
diff --git a/apptools/preferences/tests/test_preferences_helper.py b/apptools/preferences/tests/test_preferences_helper.py
index e89c71f0..d735f59b 100644
--- a/apptools/preferences/tests/test_preferences_helper.py
+++ b/apptools/preferences/tests/test_preferences_helper.py
@@ -17,7 +17,10 @@
 import unittest
 
 # Major package imports.
-from importlib_resources import files
+try:
+    from importlib.resources import files
+except ImportError:
+    from importlib_resources import files
 
 # Enthought library imports.
 from apptools.preferences.api import Preferences, PreferencesHelper
diff --git a/apptools/preferences/tests/test_py_config_file.py b/apptools/preferences/tests/test_py_config_file.py
index d28e7c2d..b7e04870 100644
--- a/apptools/preferences/tests/test_py_config_file.py
+++ b/apptools/preferences/tests/test_py_config_file.py
@@ -17,7 +17,10 @@
 from os.path import join
 
 # Major package imports.
-from importlib_resources import files
+try:
+    from importlib.resources import files
+except ImportError:
+    from importlib_resources import files
 
 # Enthought library imports.
 from .py_config_file import PyConfigFile
diff --git a/apptools/preferences/tests/test_scoped_preferences.py b/apptools/preferences/tests/test_scoped_preferences.py
index 39cd665a..4c038ba5 100644
--- a/apptools/preferences/tests/test_scoped_preferences.py
+++ b/apptools/preferences/tests/test_scoped_preferences.py
@@ -16,7 +16,10 @@
 from os.path import join
 
 # Major package imports.
-from importlib_resources import files
+try:
+    from importlib.resources import files
+except ImportError:
+    from importlib_resources import files
 
 # Enthought library imports.
 from apptools.preferences.api import Preferences, ScopedPreferences
diff --git a/setup.py b/setup.py
index 3ef0bfa0..8cd0b9e5 100644
--- a/setup.py
+++ b/setup.py
@@ -308,7 +308,7 @@ def get_long_description():
         ],
         extras_require={
             "test": [
-                "importlib-resources>=1.1.0",
+                "importlib-resources>=1.1.0; python_version<'3.9'",
             ],
             "h5": [
                 "numpy",