diff --git a/pyproject.toml b/pyproject.toml
index d738fc36..c586070f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,7 +63,7 @@ wxpython = ["pyconify>=0.2.1", "wxpython >=4.2.2"]
 
 # Supported Canavs backends
 vispy = ["vispy>=0.14.3", "pyopengl >=3.1"]
-pygfx = ["pygfx==0.9.0", "rendercanvas ==2.0.1", "wgpu==0.19.3"]
+pygfx = ["pygfx~=0.16", "rendercanvas~=2.6", "wgpu~=0.31"]
 
 # ready to go bundles with pygfx
 qt = ["ndv[pygfx,pyqt]", "imageio[tifffile] >=2.20"]
diff --git a/src/ndv/views/_app.py b/src/ndv/views/_app.py
index 934b5e7d..90975ee1 100644
--- a/src/ndv/views/_app.py
+++ b/src/ndv/views/_app.py
@@ -346,6 +346,7 @@ def process_events() -> None:
 
 def run_app() -> None:
     """Start the active GUI application event loop."""
+    print("running")
     ndv_app().run()
 
 
diff --git a/src/ndv/views/_pygfx/_array_canvas.py b/src/ndv/views/_pygfx/_array_canvas.py
index 498aefc7..a374e77d 100755
--- a/src/ndv/views/_pygfx/_array_canvas.py
+++ b/src/ndv/views/_pygfx/_array_canvas.py
@@ -387,7 +387,6 @@ def __init__(self, viewer_model: ArrayViewerModel) -> None:
         self._disconnect_mouse_events = filter_mouse_events(self._canvas, self)
 
         self._renderer = pygfx.renderers.WgpuRenderer(self._canvas)
-        self._renderer.blend_mode = "additive"
 
         self._scene = pygfx.Scene()
         self._camera: pygfx.Camera | None = None
@@ -451,7 +450,7 @@ def add_image(self, data: np.ndarray | None = None) -> PyGFXImageHandle:
         image = pygfx.Image(
             pygfx.Geometry(grid=tex),
             # depth_test=False for additive-like blending
-            pygfx.ImageBasicMaterial(depth_test=False),
+            pygfx.ImageBasicMaterial(depth_test=False, alpha_mode="add"),
         )
         self._scene.add(image)
 
@@ -476,7 +475,9 @@ def add_volume(self, data: np.ndarray | None = None) -> PyGFXImageHandle:
         vol = pygfx.Volume(
             pygfx.Geometry(grid=tex),
             # depth_test=False for additive-like blending
-            pygfx.VolumeRayMaterial(interpolation="nearest", depth_test=False),
+            pygfx.VolumeRayMaterial(
+                interpolation="nearest", depth_test=False, alpha_mode="add"
+            ),
         )
         self._scene.add(vol)
 
diff --git a/src/ndv/views/_pygfx/_histogram.py b/src/ndv/views/_pygfx/_histogram.py
index a71026d1..e18386aa 100644
--- a/src/ndv/views/_pygfx/_histogram.py
+++ b/src/ndv/views/_pygfx/_histogram.py
@@ -126,8 +126,6 @@ def __init__(self, *, vertical: bool = False) -> None:
 
         self._renderer = pygfx.renderers.WgpuRenderer(self._canvas)
 
-        self._renderer.blend_mode = "ordered1"
-
         # Note that we split the view up into multiple scenes, each with their
         # own camera and renderer.
         #
diff --git a/src/ndv/views/_pygfx/_util.py b/src/ndv/views/_pygfx/_util.py
index 9dabde2e..01f78cbd 100644
--- a/src/ndv/views/_pygfx/_util.py
+++ b/src/ndv/views/_pygfx/_util.py
@@ -23,11 +23,19 @@ def sizeHint(self) -> QSize:
 
         return rendercanvas.jupyter.JupyterRenderCanvas  # type: ignore[no-any-return]
     if frontend == GuiFrontend.WX:
-        # ...still not working
-        # import rendercanvas.wx
-        # return rendercanvas.wx.WxRenderWidget
-        from wgpu.gui.wx import WxWgpuCanvas
+        import rendercanvas.wx
+        import wx
 
-        return WxWgpuCanvas  # type: ignore[no-any-return]
+        class WxRenderWidget(rendercanvas.wx.WxRenderWidget):
+            """Ensure the widget always has a parent to avoid segfaults."""
+
+            def __init__(self, *args: object, **kwargs: object) -> None:
+                if "parent" not in kwargs and (not args or args[0] is None):
+                    # wx.Window segfaults on Reparent if created without
+                    # a parent, so use a temporary hidden frame.
+                    kwargs["parent"] = wx.Frame(None)
+                super().__init__(*args, **kwargs)
+
+        return WxRenderWidget
 
     raise ValueError(f"Unsupported frontend: {frontend}")  # pragma: no cover
diff --git a/tests/conftest.py b/tests/conftest.py
index 3c923111..03eb6bcc 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -91,15 +91,22 @@ def _catch_qt_leaks(request: FixtureRequest, qapp: QApplication) -> Iterator[Non
     # if the test failed, don't worry about checking widgets
     if request.session.testsfailed - failures_before:
         return
+    allow: list[type] = []
     try:
         from vispy.app.backends._qt import CanvasBackendDesktop
 
-        allow: tuple[type, ...] = (CanvasBackendDesktop,)
+        allow.append(CanvasBackendDesktop)
     except (ImportError, RuntimeError):
-        allow = ()
+        pass
+    try:
+        import rendercanvas.qt
+
+        allow.append(rendercanvas.qt.QRenderWidget)
+    except (ImportError, RuntimeError):
+        pass
 
     # This is a known widget that is not cleaned up properly
-    remaining = [w for w in qapp.topLevelWidgets() if not isinstance(w, allow)]
+    remaining = [w for w in qapp.topLevelWidgets() if not isinstance(w, tuple(allow))]
     if len(remaining) > nbefore:
         test_node = request.node
 
diff --git a/tests/views/_pygfx/test_histogram.py b/tests/views/_pygfx/test_histogram.py
index 8e329237..3283d761 100644
--- a/tests/views/_pygfx/test_histogram.py
+++ b/tests/views/_pygfx/test_histogram.py
@@ -85,6 +85,13 @@ def test_interaction() -> None:
         # gamma=2,
     )
     histogram = PyGFXHistogramCanvas()
+    # Ensure the canvas has a real size (rendercanvas >=2.6 returns (1, 1)
+    # before the widget is shown). Qt's show() triggers a resize, but for
+    # other backends we force it via _size_info directly.
+    if hasattr(histogram._canvas, "show"):
+        histogram._canvas.show()
+    else:
+        histogram._canvas._size_info.set_physical_size(640, 480, 1.0)
     histogram.set_range(x=(0, 10), y=(0, 1))
     histogram.model = model
     left, right = 0, 10