diff --git a/conftest.py b/conftest.py
index bd9f2d32d..45d2b5159 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,14 +1,11 @@
+from pathlib import Path
+
 from _pytest.doctest import DoctestModule
-from py.path import local
 
 collect_ignore = ['tests/messages/data', 'setup.py']
-babel_path = local(__file__).dirpath().join('babel')
+babel_path = Path(__file__).parent / 'babel'
 
 
-def pytest_collect_file(path, parent):
-    if babel_path.common(path) == babel_path:
-        if path.ext == ".py":
-            # TODO: remove check when dropping support for old Pytest
-            if hasattr(DoctestModule, "from_parent"):
-                return DoctestModule.from_parent(parent, fspath=path)
-            return DoctestModule(path, parent)
+def pytest_collect_file(file_path: Path, parent):
+    if file_path.is_relative_to(babel_path) and file_path.suffix == '.py':
+        return DoctestModule.from_parent(parent, path=file_path)
diff --git a/tox.ini b/tox.ini
index dd0ee6703..97b6bc09c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ envlist =
 
 [testenv]
 deps =
-    pytest
+    pytest>=6.0
     pytest-cov
     freezegun==0.3.12
     backports.zoneinfo;python_version<"3.9"