diff --git a/napari_ome_zarr/_tests/test_reader.py b/napari_ome_zarr/_tests/test_reader.py
index 4c2d957..235c104 100644
--- a/napari_ome_zarr/_tests/test_reader.py
+++ b/napari_ome_zarr/_tests/test_reader.py
@@ -1,4 +1,5 @@
 import sys
+from pathlib import Path
 
 import numpy as np
 import pytest
@@ -9,11 +10,14 @@
 
 class TestNapari:
     @pytest.fixture(autouse=True)
-    def initdir(self, tmpdir):
-        self.path_3d = tmpdir.mkdir("data_3d")
-        create_zarr(str(self.path_3d), astronaut, "astronaut")
-        self.path_2d = tmpdir.mkdir("data_2d")
-        create_zarr(str(self.path_2d))
+    def initdir(self, tmp_path: Path):
+        self.path_3d = tmp_path / "data_3d"
+        self.path_3d.mkdir()
+        create_zarr(self.path_3d, astronaut, "astronaut")
+
+        self.path_2d = tmp_path / "data_2d"
+        self.path_2d.mkdir()
+        create_zarr(self.path_2d)
 
     def test_get_reader_hit(self):
         reader = napari_get_reader(str(self.path_3d))
@@ -81,12 +85,12 @@ def test_image(self, path):
         self.assert_layers(layers, True, False, path)
 
     def test_labels(self):
-        filename = str(self.path_3d.join("labels"))
+        filename = self.path_2d / "labels"
         layers = napari_get_reader(filename)()
         self.assert_layers(layers, False, True)
 
     def test_label(self):
-        filename = str(self.path_3d.join("labels", "astronaut"))
+        filename = self.path_3d / "labels" / "astronaut"
         layers = napari_get_reader(filename)()
         self.assert_layers(layers, False, True)