diff --git a/setup.py b/setup.py
index e6fa53f..4988d27 100644
--- a/setup.py
+++ b/setup.py
@@ -119,24 +119,24 @@ def fix_docstring_examples(docstring):
             'zarr',
             'fsspec',
         ],
+        'test': [
+            'pytest',
+            'imagecodecs',
+            'czifile',
+            'cmapfile',
+            'oiffile',
+            'lfdfiles',
+            'psdtags',
+            'roifile',
+            'lxml',
+            'zarr',
+            'dask',
+            'xarray',
+            'fsspec',
+            'defusedxml',
+            'ndtiff',
+        ],
     },
-    tests_require=[
-        'pytest',
-        'imagecodecs',
-        'czifile',
-        'cmapfile',
-        'oiffile',
-        'lfdfiles',
-        'psdtags',
-        'roifile',
-        'lxml',
-        'zarr',
-        'dask',
-        'xarray',
-        'fsspec',
-        'defusedxml',
-        'ndtiff',
-    ],
     entry_points={
         'console_scripts': [
             'tifffile = tifffile:main',