diff --git a/tox.ini b/tox.ini
index cd26e19a9..060dccaaa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -70,8 +70,8 @@ setenv =
 pip_pre = true
 deps = -r{toxinidir}/misc/requirements/requirements-tests-bleeding.txt
 commands_pre =
-    qt5: pip install --index-url https://www.riverbankcomputing.com/pypi/simple/ --pre --upgrade PyQt5 PyQtWebEngine
-    !qt5: pip install --index-url https://www.riverbankcomputing.com/pypi/simple/ --pre --upgrade PyQt6 PyQt6-WebEngine
+    qt5: pip install --index-url https://www.riverbankcomputing.com/pypi/simple/ --pre --upgrade PyQt5 PyQtWebEngine PyQt5-Qt5 PyQtWebEngine-Qt5 PyQt5-sip
+    !qt5: pip install --index-url https://www.riverbankcomputing.com/pypi/simple/ --pre --upgrade PyQt6 PyQt6-WebEngine PyQt6-Qt6 PyQt6-WebEngine-Qt6 PyQt6-sip
 commands = {envpython} -bb -m pytest {posargs:tests}
 
 # other envs