diff --git a/setup/qt5-migrate.py b/setup/qt5-migrate.py
index 4bd6717ae6..50c3a6fa42 100644
--- a/setup/qt5-migrate.py
+++ b/setup/qt5-migrate.py
@@ -48,7 +48,7 @@ def all_py_files():
 
 def detect_qvariant():
     count = 0
-    pat = re.compile(b'|'.join(br'QVariant NONE toInt toBool toString\(\) toPyObject canConvert toBitArray toByteArray toHash toFloat toMap toLine toPoint toReal toRect toTime toUInt toUrl'.split()))  # noqa
+    pat = re.compile(b'|'.join(br'QVariant NONE toDateTime toDate isValid toInt toBool toString\(\) toPyObject canConvert toBitArray toByteArray toHash toFloat toMap toLine toPoint toReal toRect toTime toUInt toUrl'.split()))  # noqa
     exclusions = {
         'src/calibre/gui2/viewer/gestures.py': {'toPoint'},
     }