diff --git a/Tests/test_file_avif.py b/Tests/test_file_avif.py
index 9fb4ea065d3..ffc4ce0210d 100644
--- a/Tests/test_file_avif.py
+++ b/Tests/test_file_avif.py
@@ -770,7 +770,6 @@ def test_seek_errors(self) -> None:
 MAX_THREADS = os.cpu_count() or 1
 
 
-@pytest.mark.xdist_group(name="leak-group")
 @skip_unless_feature("avif")
 class TestAvifLeaks(PillowLeakTestCase):
     mem_limit = MAX_THREADS * 3 * 1024
diff --git a/Tests/test_imagegrab.py b/Tests/test_imagegrab.py
index da272da722f..01fa090dc3a 100644
--- a/Tests/test_imagegrab.py
+++ b/Tests/test_imagegrab.py
@@ -12,7 +12,6 @@
 from .helper import assert_image_equal_tofile, skip_unless_feature
 
 
-@pytest.mark.xdist_group(name="imagegrab-group")
 class TestImageGrab:
     @pytest.mark.skipif(
         os.environ.get("USERNAME") == "ContainerAdministrator",
diff --git a/pyproject.toml b/pyproject.toml
index 2b9fa7d0f3c..95609a2eb7d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -209,7 +209,7 @@ lint.isort.required-imports = [
 max_supported_python = "3.14"
 
 [tool.pytest.ini_options]
-addopts = "-ra --color=auto --numprocesses=auto --dist=loadgroup"
+addopts = "-ra --color=auto --numprocesses=auto --dist=loadscope"
 testpaths = [
   "Tests",
 ]