diff --git a/misc/requirements/requirements-pyqt-6.7.txt b/misc/requirements/requirements-pyqt-6.7.txt
index b33f919ee..b784bd052 100644
--- a/misc/requirements/requirements-pyqt-6.7.txt
+++ b/misc/requirements/requirements-pyqt-6.7.txt
@@ -4,4 +4,4 @@ PyQt6==6.7.0
 PyQt6-Qt6==6.7.0
 PyQt6-sip==13.6.0
 PyQt6-WebEngine==6.7.0
-PyQt6-WebEngine-Qt6==6.7.0
+# PyQt6-WebEngine-Qt6==6.7.0
diff --git a/misc/requirements/requirements-pyqt-6.7.txt-raw b/misc/requirements/requirements-pyqt-6.7.txt-raw
index 98b1340b2..e9fe79c07 100644
--- a/misc/requirements/requirements-pyqt-6.7.txt-raw
+++ b/misc/requirements/requirements-pyqt-6.7.txt-raw
@@ -1,4 +1,7 @@
+# WORKAROUND for https://www.riverbankcomputing.com/pipermail/pyqt/2024-April/045832.html
+#@ ignore: PyQt6-WebEngine-Qt6
+
 PyQt6 >= 6.7, < 6.8
 PyQt6-Qt6 >= 6.7, < 6.8
 PyQt6-WebEngine >= 6.7, < 6.8
-PyQt6-WebEngine-Qt6 >= 6.7, < 6.8
+# PyQt6-WebEngine-Qt6 >= 6.7, < 6.8
diff --git a/misc/requirements/requirements-pyqt-6.txt b/misc/requirements/requirements-pyqt-6.txt
index b33f919ee..b784bd052 100644
--- a/misc/requirements/requirements-pyqt-6.txt
+++ b/misc/requirements/requirements-pyqt-6.txt
@@ -4,4 +4,4 @@ PyQt6==6.7.0
 PyQt6-Qt6==6.7.0
 PyQt6-sip==13.6.0
 PyQt6-WebEngine==6.7.0
-PyQt6-WebEngine-Qt6==6.7.0
+# PyQt6-WebEngine-Qt6==6.7.0
diff --git a/misc/requirements/requirements-pyqt-6.txt-raw b/misc/requirements/requirements-pyqt-6.txt-raw
index 68a5db685..ad747afc2 100644
--- a/misc/requirements/requirements-pyqt-6.txt-raw
+++ b/misc/requirements/requirements-pyqt-6.txt-raw
@@ -1,4 +1,7 @@
 PyQt6
 PyQt6-Qt6
 PyQt6-WebEngine
-PyQt6-WebEngine-Qt6
+
+# WORKAROUND for https://www.riverbankcomputing.com/pipermail/pyqt/2024-April/045832.html
+#@ ignore: PyQt6-WebEngine-Qt6
+# PyQt6-WebEngine-Qt6
diff --git a/misc/requirements/requirements-pyqt.txt b/misc/requirements/requirements-pyqt.txt
index b33f919ee..b784bd052 100644
--- a/misc/requirements/requirements-pyqt.txt
+++ b/misc/requirements/requirements-pyqt.txt
@@ -4,4 +4,4 @@ PyQt6==6.7.0
 PyQt6-Qt6==6.7.0
 PyQt6-sip==13.6.0
 PyQt6-WebEngine==6.7.0
-PyQt6-WebEngine-Qt6==6.7.0
+# PyQt6-WebEngine-Qt6==6.7.0
diff --git a/misc/requirements/requirements-pyqt.txt-raw b/misc/requirements/requirements-pyqt.txt-raw
index 68a5db685..ad747afc2 100644
--- a/misc/requirements/requirements-pyqt.txt-raw
+++ b/misc/requirements/requirements-pyqt.txt-raw
@@ -1,4 +1,7 @@
 PyQt6
 PyQt6-Qt6
 PyQt6-WebEngine
-PyQt6-WebEngine-Qt6
+
+# WORKAROUND for https://www.riverbankcomputing.com/pipermail/pyqt/2024-April/045832.html
+#@ ignore: PyQt6-WebEngine-Qt6
+# PyQt6-WebEngine-Qt6
diff --git a/scripts/mkvenv.py b/scripts/mkvenv.py
index 4ab5d8c10..6c871744b 100755
--- a/scripts/mkvenv.py
+++ b/scripts/mkvenv.py
@@ -249,8 +249,15 @@ def install_pyqt_binary(venv_dir: pathlib.Path, version: str) -> None:
         utils.print_error("Non-glibc Linux is not a supported platform for PyQt "
                           "binaries, this will most likely fail.")
 
+    # WORKAROUND for
+    # https://www.riverbankcomputing.com/pipermail/pyqt/2024-April/045832.html
+    needs_manual_install = version in ["auto", "6", "6.7"]
     pip_install(venv_dir, '-r', pyqt_requirements_file(version),
-                '--only-binary', ','.join(PYQT_PACKAGES))
+                '--only-binary', ','.join(PYQT_PACKAGES),
+                *(["--no-deps"] if needs_manual_install else []))
+
+    if needs_manual_install:
+        pip_install(venv_dir, "PyQt6-WebEngine-Qt6")
 
 
 def install_pyqt_source(venv_dir: pathlib.Path, version: str) -> None:
diff --git a/tox.ini b/tox.ini
index 8ce7b22b3..884ff9068 100644
--- a/tox.ini
+++ b/tox.ini
@@ -51,6 +51,13 @@ deps =
     pyqt65: -r{toxinidir}/misc/requirements/requirements-pyqt-6.5.txt
     pyqt66: -r{toxinidir}/misc/requirements/requirements-pyqt-6.6.txt
     pyqt67: -r{toxinidir}/misc/requirements/requirements-pyqt-6.7.txt
+# WORKAROUND for https://www.riverbankcomputing.com/pipermail/pyqt/2024-April/045832.html
+# --no-deps since we install from a complete requirements.txt anyways.
+install_command =
+    pyqt67: python -I -m pip install --no-deps {opts} {packages}
+    !pyqt67: python -I -m pip install {opts} {packages}
+commands_pre =
+    pyqt67: pip install --extra-index-url https://www.riverbankcomputing.com/pypi/simple/ PyQt6-WebEngine-Qt6
 commands =
     !pyqt-!pyqt515-!pyqt5152-!pyqt62-!pyqt63-!pyqt64-!pyqt65-!pyqt66-!pyqt67: {envpython} scripts/link_pyqt.py --tox {envdir}
     {envpython} -bb -m pytest {posargs:tests}
@@ -193,6 +200,13 @@ passenv =
     PYINSTALLER_DEBUG
 setenv =
     qt5: PYINSTALLER_QT5=true
+# WORKAROUND for https://www.riverbankcomputing.com/pipermail/pyqt/2024-April/045832.html
+# --no-deps since we install from a complete requirements.txt anyways.
+install_command =
+    !qt5: python -I -m pip install --no-deps {opts} {packages}
+    qt5: python -I -m pip install {opts} {packages}
+commands_pre =
+    !qt5: pip install --extra-index-url https://www.riverbankcomputing.com/pypi/simple/ PyQt6-WebEngine-Qt6
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/misc/requirements/requirements-pyinstaller.txt