diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index fa22922..a6236e4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,14 +20,15 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/setup.py b/setup.py
index ba91c96..e5a7198 100755
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,6 @@ def get_version():
             "pytest-cov",
             "pytest-regressions",
             "pygments",
-            "sphinx_testing",
             "bs4",
             "rinohtype",
         ],
diff --git a/tests/conftest.py b/tests/conftest.py
index f776f49..e6d450a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3,7 +3,6 @@
 from pathlib import Path
 from bs4 import BeautifulSoup
 import sphinx
-from sphinx.testing.path import path
 
 from sphinx_tabs.tabs import FILES
 
@@ -19,7 +18,7 @@ def pytest_configure(config):
 @pytest.fixture(scope="session")
 def rootdir():
     """Pytest uses this to find test documents."""
-    return path(__file__).parent.abspath() / "roots"
+    return Path(__file__).parent.absolute() / "roots"
 
 
 @pytest.fixture(autouse=True)
@@ -117,7 +116,7 @@ def read(app, docname="index", resolve=False, regress=False, replace=None):
             extension = ".xml"
 
         # convert absolute filenames
-        for node in doctree.traverse(lambda n: "source" in n):
+        for node in doctree.findall(lambda n: "source" in n):
             node["source"] = Path(node["source"]).name
 
         if regress: