diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 4cb47fff..56d55db7 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,12 +10,10 @@ build:
       - asdf plugin add uv
       - asdf install uv latest
       - asdf global uv latest
-      # Turn `python -m virtualenv` into `python -c pass`
-      - truncate --size 0 $( dirname $( uv python find ) )/../lib/python3*/site-packages/virtualenv/__main__.py
-    post_create_environment:
+    create_environment:
       - uv venv $READTHEDOCS_VIRTUALENV_PATH
-      # Turn `python -m pip` into `python -c pass`
-      - truncate --size 0 $( ls -d $READTHEDOCS_VIRTUALENV_PATH/lib/python3* )/site-packages/pip.py
-    post_install:
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH uv pip install --cache-dir $READTHEDOCS_VIRTUALENV_PATH/../../uv_cache .[niftiext]
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH uv pip install --cache-dir $READTHEDOCS_VIRTUALENV_PATH/../../uv_cache -r docs/requirements.txt
+    install:
+      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH uv pip install --cache-dir $READTHEDOCS_VIRTUALENV_PATH/../../uv_cache .[niftiext] -r docs/requirements.txt
+
+sphinx:
+  configuration: docs/conf.py
diff --git a/README.md b/README.md
index b5a45349..4ae2340f 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # NiTransforms
 [![DOI](https://joss.theoj.org/papers/10.21105/joss.03459/status.svg)](https://doi.org/10.21105/joss.03459)
 [![ISBI2020](https://img.shields.io/badge/doi-10.31219%2Fosf.io%2F8aq7b-blue.svg)](https://doi.org/10.31219/osf.io/8aq7b)
-[![Deps & CI](https://github.com/nipy/nitransforms/actions/workflows/travis.yml/badge.svg)](https://github.com/nipy/nitransforms/actions/workflows/travis.yml)
+[![Deps & CI](https://github.com/nipy/nitransforms/actions/workflows/tox.yml/badge.svg)](https://github.com/nipy/nitransforms/actions/workflows/tox.yml)
 [![CircleCI](https://circleci.com/gh/nipy/nitransforms.svg?style=svg)](https://circleci.com/gh/nipy/nitransforms)
 [![codecov](https://codecov.io/gh/nipy/nitransforms/branch/master/graph/badge.svg)](https://codecov.io/gh/nipy/nitransforms)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/nipy/nitransforms/master?filepath=docs%2Fnotebooks%2F)
diff --git a/nitransforms/conftest.py b/nitransforms/conftest.py
index 854cac43..70680882 100644
--- a/nitransforms/conftest.py
+++ b/nitransforms/conftest.py
@@ -6,8 +6,6 @@
 import pytest
 import tempfile
 
-_data = None
-_brainmask = None
 _testdir = Path(os.getenv("TEST_DATA_HOME", "~/.nitransforms/testdata")).expanduser()
 _datadir = Path(__file__).parent / "tests" / "data"
 
@@ -48,10 +46,6 @@ def testdata_path():
 @pytest.fixture
 def get_testdata():
     """Generate data in the requested orientation."""
-    global _data
-
-    if _data is not None:
-        return _data
 
     return _reorient(_testdir / "someones_anatomy.nii.gz")
 
@@ -59,11 +53,6 @@ def get_testdata():
 @pytest.fixture
 def get_testmask():
     """Generate data in the requested orientation."""
-    global _brainmask
-
-    if _brainmask is not None:
-        return _brainmask
-
     return _reorient(_testdir / "someones_anatomy_brainmask.nii.gz")