diff --git a/doc/conf.py b/doc/conf.py
index 076557a3..6c7b5b35 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -289,10 +289,7 @@
     "joblib": ("https://joblib.readthedocs.io/en/latest", None),
     "nibabel": ("https://nipy.org/nibabel", None),
     "nilearn": ("http://nilearn.github.io/stable", None),
-    "dipy": (
-        "https://dipy.org/documentation/1.4.0./",
-        "https://dipy.org/documentation/1.4.0./objects.inv/",
-    ),
+    "dipy": ("https://docs.dipy.org/1.8.0/", None),
 }
 intersphinx_timeout = 5
 
diff --git a/mne_connectivity/conftest.py b/mne_connectivity/conftest.py
index 4f22a3d9..63e754e1 100644
--- a/mne_connectivity/conftest.py
+++ b/mne_connectivity/conftest.py
@@ -12,6 +12,38 @@
 from mne.utils import _check_qt_version
 
 
+def has_pyvista():
+    """Check that PyVista is installed."""
+    try:
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", category=DeprecationWarning)
+            import pyvista  # noqa: F401
+        return True
+    except ImportError:
+        return False
+
+
+def has_pyvistaqt():
+    """Check that PyVistaQt is installed."""
+    try:
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", category=DeprecationWarning)
+            import pyvistaqt  # noqa: F401
+        return True
+    except ImportError:
+        return False
+
+
+def has_imageio_ffmpeg():
+    """Check if imageio-ffmpeg is installed."""
+    try:
+        import imageio_ffmpeg  # noqa: F401
+
+        return True
+    except ImportError:
+        return False
+
+
 def pytest_configure(config):
     """Configure pytest options."""
     # Fixtures
@@ -153,12 +185,6 @@ def _use_backend(backend_name, interactive):
 
 
 def _check_skip_backend(name):
-    from mne.viz.backends.tests._utils import (
-        has_imageio_ffmpeg,
-        has_pyvista,
-        has_pyvistaqt,
-    )
-
     if name in ("pyvistaqt", "notebook"):
         if not has_pyvista():
             pytest.skip("Test skipped, requires pyvista.")
diff --git a/pyproject.toml b/pyproject.toml
index 45207f68..ca5840c5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -103,6 +103,7 @@ style = [
   'yamllint',
 ]
 test = [
+  "pytest-timeout",
   'joblib',
   'mne-bids',
   'mne-connectivity[gui]',
@@ -112,7 +113,6 @@ test = [
   'pytest',
   'pytest-cov',
   'statsmodels',
-  "pytest-timeout",
 ]
 
 [project.urls]