diff --git a/changelog/10337.bugfix.rst b/changelog/10337.bugfix.rst
new file mode 100644
index 000000000..c5eeff19d
--- /dev/null
+++ b/changelog/10337.bugfix.rst
@@ -0,0 +1,2 @@
+Fixed but that fake intermediate modules generated by ``--import-mode=importlib`` would not include the
+child modules as attributes of the parent modules.
diff --git a/testing/test_pathlib.py b/testing/test_pathlib.py
index b9933353a..c15a81ea1 100644
--- a/testing/test_pathlib.py
+++ b/testing/test_pathlib.py
@@ -602,5 +602,5 @@ class TestImportLibMode:
         modules = {"xxx.tests.foo": ModuleType("xxx.tests.foo")}
         insert_missing_modules(modules, "xxx.tests.foo")
         assert sorted(modules) == ["xxx", "xxx.tests", "xxx.tests.foo"]
-        assert modules["xxx"].tests == modules["xxx.tests"]
-        assert modules["xxx.tests"].foo == modules["xxx.tests.foo"]
+        assert modules["xxx"].tests is modules["xxx.tests"]
+        assert modules["xxx.tests"].foo is modules["xxx.tests.foo"]