diff --git a/.github/workflows/test-mingw.yml b/.github/workflows/test-mingw.yml
index b9d2abeb338..6125af0249e 100644
--- a/.github/workflows/test-mingw.yml
+++ b/.github/workflows/test-mingw.yml
@@ -42,7 +42,7 @@ jobs:
               ${{ matrix.package }}-python3-numpy \
               ${{ matrix.package }}-python3-olefile \
               ${{ matrix.package }}-python3-pip \
-              ${{ matrix.package }}-python3-pyqt5 \
+              ${{ matrix.package }}-python-pyqt6 \
               ${{ matrix.package }}-python3-setuptools \
               ${{ matrix.package }}-freetype \
               ${{ matrix.package }}-ghostscript \
diff --git a/src/PIL/ImageQt.py b/src/PIL/ImageQt.py
index 32630f2ca44..e142f1f277e 100644
--- a/src/PIL/ImageQt.py
+++ b/src/PIL/ImageQt.py
@@ -66,7 +66,13 @@ def fromqimage(im):
     :param im: QImage or PIL ImageQt object
     """
     buffer = QBuffer()
-    qt_openmode = QIODevice.OpenMode if qt_version == "6" else QIODevice
+    if qt_version == "6":
+        try:
+            qt_openmode = QIODevice.OpenModeFlag
+        except AttributeError:
+            qt_openmode = QIODevice.OpenMode
+    else:
+        qt_openmode = QIODevice
     buffer.open(qt_openmode.ReadWrite)
     # preserve alpha channel with png
     # otherwise ppm is more friendly with Image.open