diff --git a/Lib/test/test_pyrepl/test_pyrepl.py b/Lib/test/test_pyrepl/test_pyrepl.py
index 49aacab811f..bb529939ce9 100644
--- a/Lib/test/test_pyrepl/test_pyrepl.py
+++ b/Lib/test/test_pyrepl/test_pyrepl.py
@@ -3,6 +3,7 @@
 import itertools
 import os
 import pathlib
+import pkgutil
 import re
 import rlcompleter
 import select
@@ -1131,6 +1132,8 @@ def test_already_imported_custom_module_no_other_suggestions(self):
             (dir2 / "mymodule").mkdir()
             (dir2 / "mymodule" / "__init__.py").touch()
             (dir2 / "mymodule" / "bar.py").touch()
+            # Purge FileFinder cache after adding files
+            pkgutil.get_importer(_dir2).invalidate_caches()
             # mymodule found in dir2 before dir1, but it was already imported
             # from dir1 -> suggest dir1 submodules only
             events = code_to_events("import mymodule.\t\n")