diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index c8842e37b2c..f6d0aeb1d4a 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -80,6 +80,12 @@ jobs:
         pytest-cov
         pytest-timeout
 
+    - name: Install CPython dependencies
+      if: "!contains(matrix.python-version, 'pypy')"
+      run: >
+        python3 -m pip install
+        PyQt6
+
     - name: Install dependencies
       id: install
       run: |
diff --git a/src/PIL/ImageQt.py b/src/PIL/ImageQt.py
index a3d647138df..48c3419d308 100644
--- a/src/PIL/ImageQt.py
+++ b/src/PIL/ImageQt.py
@@ -213,4 +213,6 @@ def toqimage(im: Image.Image | str | QByteArray) -> ImageQt:
 
 def toqpixmap(im: Image.Image | str | QByteArray) -> QPixmap:
     qimage = toqimage(im)
-    return getattr(QPixmap, "fromImage")(qimage)
+    pixmap = getattr(QPixmap, "fromImage")(qimage)
+    pixmap.detach()
+    return pixmap