diff --git a/numpydoc/tests/hooks/test_utils.py b/numpydoc/tests/hooks/test_utils.py
index 5db63762..918b9045 100644
--- a/numpydoc/tests/hooks/test_utils.py
+++ b/numpydoc/tests/hooks/test_utils.py
@@ -23,7 +23,11 @@ def test_find_project_root(tmp_path, request, reason_file, files, expected_reaso
         (tmp_path / reason_file).touch()
 
     if files:
-        expected_dir = Path("/") if expected_reason == "file system root" else tmp_path
+        if expected_reason == "file system root":
+            expected_dir = Path(tmp_path.drive + tmp_path.root)
+        else:
+            expected_dir = tmp_path
+
         for file in files:
             (tmp_path / file).touch()
     else:
diff --git a/numpydoc/tests/hooks/test_validate_hook.py b/numpydoc/tests/hooks/test_validate_hook.py
index b235313b..c9acad3f 100644
--- a/numpydoc/tests/hooks/test_validate_hook.py
+++ b/numpydoc/tests/hooks/test_validate_hook.py
@@ -1,6 +1,7 @@
 """Test the numpydoc validate pre-commit hook."""
 
 import inspect
+import sys
 from pathlib import Path
 
 import pytest
@@ -63,6 +64,8 @@ def test_validate_hook(example_module, config, capsys):
         numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
         """
     )
+    if sys.platform == "win32":
+        expected = expected.replace("/", "\\")
 
     return_code = run_hook([example_module], config=config)
     assert return_code == 1
@@ -90,6 +93,8 @@ def test_validate_hook_with_ignore(example_module, capsys):
         numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
         """
     )
+    if sys.platform == "win32":
+        expected = expected.replace("/", "\\")
 
     return_code = run_hook([example_module], ignore=["ES01", "SA01", "EX01"])
 
@@ -133,6 +138,8 @@ def test_validate_hook_with_toml_config(example_module, tmp_path, capsys):
         numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
         """
     )
+    if sys.platform == "win32":
+        expected = expected.replace("/", "\\")
 
     return_code = run_hook([example_module], config=tmp_path)
     assert return_code == 1
@@ -168,6 +175,8 @@ def test_validate_hook_with_setup_cfg(example_module, tmp_path, capsys):
         numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
         """
     )
+    if sys.platform == "win32":
+        expected = expected.replace("/", "\\")
 
     return_code = run_hook([example_module], config=tmp_path)
     assert return_code == 1
@@ -209,6 +218,8 @@ def test_validate_hook_exclude_option_pyproject(example_module, tmp_path, capsys
         numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
         """
     )
+    if sys.platform == "win32":
+        expected = expected.replace("/", "\\")
 
     return_code = run_hook([example_module], config=tmp_path)
     assert return_code == 1
@@ -242,6 +253,8 @@ def test_validate_hook_exclude_option_setup_cfg(example_module, tmp_path, capsys
         numpydoc/tests/hooks/example_module.py:17: PR07 Parameter "*args" has no description
         """
     )
+    if sys.platform == "win32":
+        expected = expected.replace("/", "\\")
 
     return_code = run_hook([example_module], config=tmp_path)
     assert return_code == 1
diff --git a/pyproject.toml b/pyproject.toml
index b8911d85..289eb609 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -169,6 +169,7 @@ attr = 'numpydoc.__version__'
 [tool.setuptools.package-data]
 numpydoc = [
     'tests/test_*.py',
+    'tests/hooks/test_*.py',
     'tests/tinybuild/Makefile',
     'tests/tinybuild/index.rst',
     'tests/tinybuild/*.py',