diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f2a5f03..3524778 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,6 +7,8 @@ on:
       - 'v*'
   pull_request:
 
+  workflow_dispatch:
+
 jobs:
 
   pre-commit:
diff --git a/pytest_notebook/plugin.py b/pytest_notebook/plugin.py
index ab9cd3e..0c85142 100644
--- a/pytest_notebook/plugin.py
+++ b/pytest_notebook/plugin.py
@@ -11,6 +11,7 @@
 
 """
 import os
+from pathlib import Path
 import shlex
 
 import pytest
@@ -270,7 +271,7 @@ def pytest_collect_file(path, parent):
         path.fnmatch(pat) for pat in other_args.get("nb_file_fnmatch", ["*.ipynb"])
     ):
         try:
-            return JupyterNbCollector.from_parent(parent, fspath=path)
+            return JupyterNbCollector.from_parent(parent, path=Path(path))
         except AttributeError:
             return JupyterNbCollector(path, parent)
 
diff --git a/tests/test_plugin_fixture.py b/tests/test_plugin_fixture.py
index c98c927..5648064 100644
--- a/tests/test_plugin_fixture.py
+++ b/tests/test_plugin_fixture.py
@@ -67,6 +67,44 @@ def test_nb(nb_regression):
                         # the following are the defaults for pytest-cov
                         "cov_source": (),
                         "cov_config": ".coveragerc",
+                        # expected diff_replace loaded from pytest config in tox.ini
+                        "diff_replace": (
+                            (
+                                "/cells/*/outputs/*/text",
+                                "\\/([A-z0-9-_+]+\\/)*[A-z0-9-_+]+\\.ipynb",
+                                "/.../<filename>.ipynb",
+                            ),
+                            (
+                                "/cells/*/outputs/*/text",
+                                "rootdir\\:\\s\\/([A-z0-9-_+]+\\/)*[A-z0-9-_+]+",
+                                "rootdir: /.../<dir>",
+                            ),
+                            (
+                                "/cells/*/outputs/*/text",
+                                "in\\s[\\.0-9]+\\sseconds",
+                                "in xxx seconds",
+                            ),
+                            (
+                                "/cells/*/outputs/*/text",
+                                "platform\\s(darwin|linux).*\\n",
+                                "platform info ...\\n",
+                            ),
+                            (
+                                "/cells/*/outputs/*/text",
+                                "plugins\\:\\s.*\\n",
+                                "plugin info ...\\n",
+                            ),
+                            (
+                                "/cells/*/outputs/*/text",
+                                "exec_cwd\\=\\\\\\'\\/([A-z0-9-_+]+\\/)*[A-z0-9-_+]+\\\\\\'",
+                                "exec_cwd=/.../<dir>",
+                            ),
+                            (
+                                "/cells/*/outputs/*/traceback",
+                                "\\<ipython\\-input\\-[\\-0-9a-zA-Z]*\\>",
+                                "<ipython-input-XXXX>",
+                            ),
+                        ),
                     }
                 )
             )
diff --git a/tox.ini b/tox.ini
index c1c9160..66a7458 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,3 +36,6 @@ nb_diff_replace =
     /cells/*/outputs/*/text plugins\:\s.*\n "plugin info ...\n"
     /cells/*/outputs/*/text "exec_cwd\=\\\'\/([A-z0-9-_+]+\/)*[A-z0-9-_+]+\\\'" "exec_cwd=/.../<dir>"
     /cells/*/outputs/*/traceback \<ipython\-input\-[\-0-9a-zA-Z]*\> "<ipython-input-XXXX>"
+
+# work around PermissionErrors in /tmp dirs by test_run_fail() test
+addopts = --basetemp=tmp