diff --git a/aqt/progress.py b/aqt/progress.py
index 82d65d316..07d137700 100644
--- a/aqt/progress.py
+++ b/aqt/progress.py
@@ -112,6 +112,7 @@ class ProgressManager:
         self._win.setCancelButton(None)
         self._win.setAutoClose(False)
         self._win.setAutoReset(False)
+        self._win.setWindowModality(Qt.ApplicationModal)
         self._win.setMinimumWidth(300)
         # we need to manually manage minimum time to show, as qt gets confused
         # by the db handler