diff --git a/testing/_py/test_local.py b/testing/_py/test_local.py
index 91b14aa2e..70501b81f 100644
--- a/testing/_py/test_local.py
+++ b/testing/_py/test_local.py
@@ -618,6 +618,7 @@ class TestLocalPath(CommonFSTests):
 
     @skiponwin32
     def test_chdir_gone(self, path1):
+        original_cwd = os.getcwd()
         p = path1.ensure("dir_to_be_removed", dir=1)
         p.chdir()
         p.remove()
@@ -628,15 +629,18 @@ class TestLocalPath(CommonFSTests):
         with pytest.raises(error.ENOENT):
             with p.as_cwd():
                 raise NotImplementedError
+        os.chdir(original_cwd)
 
     @skiponwin32
     def test_chdir_gone_in_as_cwd(self, path1):
+        original_cwd = os.getcwd()
         p = path1.ensure("dir_to_be_removed", dir=1)
         p.chdir()
         p.remove()
 
         with path1.as_cwd() as old:
             assert old is None
+        os.chdir(original_cwd)
 
     def test_as_cwd(self, path1):
         dir = path1.ensure("subdir", dir=1)
diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py
index 429fb4e43..1c614dadd 100644
--- a/testing/acceptance_test.py
+++ b/testing/acceptance_test.py
@@ -6,6 +6,7 @@ import types
 
 import pytest
 from _pytest.config import ExitCode
+from _pytest.monkeypatch import MonkeyPatch
 from _pytest.pathlib import symlink_or_skip
 from _pytest.pytester import Pytester
 
@@ -651,7 +652,7 @@ class TestInvocationVariants:
         result.stderr.fnmatch_lines(["*not*found*test_missing*"])
 
     def test_cmdline_python_namespace_package(
-        self, pytester: Pytester, monkeypatch
+        self, pytester: Pytester, monkeypatch: MonkeyPatch
     ) -> None:
         """Test --pyargs option with namespace packages (#1567).
 
@@ -731,6 +732,7 @@ class TestInvocationVariants:
         result.stdout.fnmatch_lines(
             ["*test_world.py::test_other*PASSED*", "*1 passed*"]
         )
+        monkeypatch.undo()
 
     def test_invoke_test_and_doctestmodules(self, pytester: Pytester) -> None:
         p = pytester.makepyfile(
diff --git a/testing/test_argcomplete.py b/testing/test_argcomplete.py
index 8c10e230b..a863947d8 100644
--- a/testing/test_argcomplete.py
+++ b/testing/test_argcomplete.py
@@ -67,22 +67,21 @@ class FilesCompleter:
 
 class TestArgComplete:
     @pytest.mark.skipif("sys.platform in ('win32', 'darwin')")
-    def test_compare_with_compgen(
-        self, tmp_path: Path, monkeypatch: MonkeyPatch
-    ) -> None:
+    def test_compare_with_compgen(self, tmp_path: Path) -> None:
         from _pytest._argcomplete import FastFilesCompleter
 
         ffc = FastFilesCompleter()
         fc = FilesCompleter()
 
-        monkeypatch.chdir(tmp_path)
+        with MonkeyPatch.context() as mp:
+            mp.chdir(tmp_path)
 
-        assert equal_with_bash("", ffc, fc, out=sys.stdout)
+            assert equal_with_bash("", ffc, fc, out=sys.stdout)
 
-        tmp_path.cwd().joinpath("data").touch()
+            tmp_path.cwd().joinpath("data").touch()
 
-        for x in ["d", "data", "doesnotexist", ""]:
-            assert equal_with_bash(x, ffc, fc, out=sys.stdout)
+            for x in ["d", "data", "doesnotexist", ""]:
+                assert equal_with_bash(x, ffc, fc, out=sys.stdout)
 
     @pytest.mark.skipif("sys.platform in ('win32', 'darwin')")
     def test_remove_dir_prefix(self):
diff --git a/testing/test_collection.py b/testing/test_collection.py
index ca2e2b731..56e97e92c 100644
--- a/testing/test_collection.py
+++ b/testing/test_collection.py
@@ -244,7 +244,7 @@ class TestCollectFS:
         rec = pytester.inline_run("xyz123/test_2.py")
         rec.assertoutcome(failed=1)
 
-    def test_testpaths_ini(self, pytester: Pytester, monkeypatch: MonkeyPatch) -> None:
+    def test_testpaths_ini(self, pytester: Pytester) -> None:
         pytester.makeini(
             """
             [pytest]
@@ -275,10 +275,11 @@ class TestCollectFS:
 
         # changing cwd to each subdirectory and running pytest without
         # arguments collects the tests in that directory normally
-        for dirname in ("a", "b", "c"):
-            monkeypatch.chdir(pytester.path.joinpath(dirname))
-            items, reprec = pytester.inline_genitems()
-            assert [x.name for x in items] == ["test_%s" % dirname]
+        with MonkeyPatch.context() as mp:
+            for dirname in ("a", "b", "c"):
+                mp.chdir(pytester.path.joinpath(dirname))
+                items, reprec = pytester.inline_genitems()
+                assert [x.name for x in items] == ["test_%s" % dirname]
 
 
 class TestCollectPluginHookRelay:
@@ -660,7 +661,7 @@ class Test_getinitialnodes:
         for parent in col.listchain():
             assert parent.config is config
 
-    def test_pkgfile(self, pytester: Pytester, monkeypatch: MonkeyPatch) -> None:
+    def test_pkgfile(self, pytester: Pytester) -> None:
         """Verify nesting when a module is within a package.
         The parent chain should match: Module<x.py> -> Package<subdir> -> Session.
             Session's parent should always be None.
@@ -669,7 +670,7 @@ class Test_getinitialnodes:
         subdir = tmp_path.joinpath("subdir")
         x = ensure_file(subdir / "x.py")
         ensure_file(subdir / "__init__.py")
-        with monkeypatch.context() as mp:
+        with MonkeyPatch.context() as mp:
             mp.chdir(subdir)
             config = pytester.parseconfigure(x)
         col = pytester.getnode(config, x)