diff --git a/setup.cfg b/setup.cfg
index adfe8c8..7ab117e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,6 +44,8 @@ testing =
     pytest
     pytest-cov
     pytest-qt
+    # should only be needed till napari 0.5.0 release
+    lxml_html_clean
 doc =
     sphinx>6
     sphinx-autobuild
diff --git a/tox.ini b/tox.ini
index af2b8d3..e5efda8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -37,10 +37,12 @@ commands = pytest -v --color=yes --cov=napari_animation --cov-report=xml
 [testenv:py{38,39,310,311}-{linux,macos,windows}-pyqt]
 deps =
     napari[pyqt5,testing]
+    lxml_html_clean # should only be needed till napari 0.5.0
 
 [testenv:py{38,39,310}-{linux,macos,windows}-pyside]
 deps =
     napari[pyside2,testing]
+    lxml_html_clean # should only be needed till napari 0.5.0
 
 [testenv:ruff]
 skip_install = True