diff --git a/Orange/widgets/data/utils/pythoneditor/tests/base.py b/Orange/widgets/data/utils/pythoneditor/tests/base.py
index a6625e3674c..8e6909e94c1 100644
--- a/Orange/widgets/data/utils/pythoneditor/tests/base.py
+++ b/Orange/widgets/data/utils/pythoneditor/tests/base.py
@@ -7,6 +7,8 @@
 as published by the Free Software Foundation, version 2.1 of the license.
 This is compatible with Orange3's GPL-3.0 license.
 """  # pylint: disable=duplicate-code
+import gc
+
 from AnyQt.QtGui import QKeySequence
 from AnyQt.QtTest import QTest
 from AnyQt.QtCore import Qt
@@ -26,6 +28,7 @@ def setUp(self) -> None:
     def tearDown(self) -> None:
         self.qpart.terminate()
         del self.qpart
+        gc.collect()
         super().tearDown()