diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d746d422..034b6553 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -58,7 +58,7 @@ jobs:
         if: matrix.os.matrix == 'linux'
         run: |
           sudo apt-get update --yes
-          sudo apt-get install --yes libgl1
+          sudo apt-get install --yes libgl1 libgl1-mesa-dev xvfb x11-utils libdbus-1-3 libxkbcommon-x11-0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 libxcb-xfixes0
           # Required to stubtest QtMultimedia
           sudo apt-get install --yes libpulse-mainloop-glib0
       - name: Install
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6352036e..6eed6c48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 * [#138](https://github.com/python-qt-tools/PyQt5-stubs/pull/138) update to PyQt5 5.15.3
 * [#144](https://github.com/python-qt-tools/PyQt5-stubs/pull/144) add `QTreeWidgetItem.__lt__()` to allow sorting of items in a QTreeWidget
+* [#148](https://github.com/python-qt-tools/PyQt5-stubs/pull/148) add `widgetResizable` parameter to `QScrollArea.__init__()`
 
 ## 5.15.2.0
 
diff --git a/PyQt5-stubs/QtWidgets.pyi b/PyQt5-stubs/QtWidgets.pyi
index 92d28ffb..5ec04cdc 100644
--- a/PyQt5-stubs/QtWidgets.pyi
+++ b/PyQt5-stubs/QtWidgets.pyi
@@ -8147,7 +8147,7 @@ class QRubberBand(QWidget):
 
 class QScrollArea(QAbstractScrollArea):
 
-    def __init__(self, parent: typing.Optional[QWidget] = ...) -> None: ...
+    def __init__(self, parent: typing.Optional[QWidget] = ..., *, widgetResizable: bool = ...) -> None: ...
 
     def viewportSizeHint(self) -> QtCore.QSize: ...
     def scrollContentsBy(self, dx: int, dy: int) -> None: ...
diff --git a/tests/qscrollarea.py b/tests/qscrollarea.py
new file mode 100644
index 00000000..972424ec
--- /dev/null
+++ b/tests/qscrollarea.py
@@ -0,0 +1,4 @@
+from PyQt5 import QtWidgets
+
+# https://github.com/python-qt-tools/PyQt5-stubs/issues/147
+QtWidgets.QScrollArea(widgetResizable=True)
diff --git a/tests/test_stubs.py b/tests/test_stubs.py
index b56bf85b..36e14a51 100644
--- a/tests/test_stubs.py
+++ b/tests/test_stubs.py
@@ -1,11 +1,17 @@
 import os.path
 import pytest
 from mypy import api
+from PyQt5 import QtWidgets
 
 
 TESTS_DIR = os.path.dirname(__file__)
 
 
+application = QtWidgets.QApplication.instance()
+assert application is None
+application = QtWidgets.QApplication([])
+
+
 def gen_tests():
     for filename in os.listdir(TESTS_DIR):
         if filename.endswith('.py') and not filename.startswith('test_'):
diff --git a/tox.ini b/tox.ini
index 5d97a76e..da3e9973 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,6 +5,7 @@ envlist = py3{5,6,7,8,9}
 deps =
   mypy @ git+https://github.com/python/mypy@538d36481526135c44b90383663eaa177cfc32e3
   pytest
+  pytest-xvfb
   pip>=20.0
 commands = 
   pip install PyQt5==5.15.* PyQt3D==5.15.* PyQtChart==5.15.*  PyQtDataVisualization==5.15.* PyQtNetworkAuth==5.15.* PyQtPurchasing==5.15.* PyQtWebEngine==5.15.*