diff --git a/src/diffusers/testing_utils.py b/src/diffusers/doctest_utils.py
similarity index 99%
rename from src/diffusers/testing_utils.py
rename to src/diffusers/doctest_utils.py
index 35d80fd2f17c..ac98f5c632ce 100644
--- a/src/diffusers/testing_utils.py
+++ b/src/diffusers/doctest_utils.py
@@ -115,7 +115,7 @@ class HfDoctestModule(Module):
     tests.
     """
 
-    def collect(self) -> Iterable[DoctestItem]:
+    def collect(self) -> Iterable["DoctestItem"]:
         class MockAwareDocTestFinder(doctest.DocTestFinder):
             """A hackish doctest finder that overrides stdlib internals to fix a stdlib bug.
 
diff --git a/src/diffusers/utils/not_doctested.txt b/src/diffusers/utils/not_doctested.txt
deleted file mode 100644
index e69de29bb2d1..000000000000
diff --git a/src/diffusers/utils/check_doctest_list.py b/utils/check_doctest_list.py
similarity index 100%
rename from src/diffusers/utils/check_doctest_list.py
rename to utils/check_doctest_list.py