diff --git a/tests/conftest.py b/tests/conftest.py
index 0414b9e22f..7a30c56783 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3,6 +3,10 @@
 
 import pytest
 from _pytest import monkeypatch
+try:
+    from _pytest.compat import NOTSET as notset
+except ImportError:
+    from _pytest.monkeypatch import notset
 
 from flask import Flask
 from flask.globals import app_ctx as _app_ctx
@@ -16,15 +20,15 @@ def _standard_os_environ():
     """
     mp = monkeypatch.MonkeyPatch()
     out = (
-        (os.environ, "FLASK_ENV_FILE", monkeypatch.notset),
-        (os.environ, "FLASK_APP", monkeypatch.notset),
-        (os.environ, "FLASK_DEBUG", monkeypatch.notset),
-        (os.environ, "FLASK_RUN_FROM_CLI", monkeypatch.notset),
-        (os.environ, "WERKZEUG_RUN_MAIN", monkeypatch.notset),
+        (os.environ, "FLASK_ENV_FILE", notset),
+        (os.environ, "FLASK_APP", notset),
+        (os.environ, "FLASK_DEBUG", notset),
+        (os.environ, "FLASK_RUN_FROM_CLI", notset),
+        (os.environ, "WERKZEUG_RUN_MAIN", notset),
     )
 
     for _, key, value in out:
-        if value is monkeypatch.notset:
+        if value is notset:
             mp.delenv(key, False)
         else:
             mp.setenv(key, value)
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 2a34088bd5..de9d14e4e5 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -11,7 +11,10 @@
 
 import click
 import pytest
-from _pytest.monkeypatch import notset
+try:
+    from _pytest.compat import NOTSET as notset
+except ImportError:
+    from _pytest.monkeypatch import notset
 from click.testing import CliRunner
 
 from flask import Blueprint