diff --git a/tests/migrations/test_base.py b/tests/migrations/base.py
similarity index 100%
rename from tests/migrations/test_base.py
rename to tests/migrations/base.py
diff --git a/tests/migrations/test_commands.py b/tests/migrations/test_commands.py
index e9929c1eafa9..61336f553328 100644
--- a/tests/migrations/test_commands.py
+++ b/tests/migrations/test_commands.py
@@ -38,9 +38,9 @@
 from django.utils import timezone
 from django.utils.version import get_docs_version
 
+from .base import MigrationTestBase
 from .models import UnicodeModel, UnserializableModel
 from .routers import TestRouter
-from .test_base import MigrationTestBase
 
 HAS_BLACK = shutil.which("black")
 
diff --git a/tests/migrations/test_deprecated_fields.py b/tests/migrations/test_deprecated_fields.py
index 63975514f656..e75521eafaf3 100644
--- a/tests/migrations/test_deprecated_fields.py
+++ b/tests/migrations/test_deprecated_fields.py
@@ -1,7 +1,7 @@
 from django.core.management import call_command
 from django.test import override_settings
 
-from .test_base import MigrationTestBase
+from .base import MigrationTestBase
 
 
 class Tests(MigrationTestBase):
diff --git a/tests/migrations/test_executor.py b/tests/migrations/test_executor.py
index 30ef63c662e5..10cf505d039d 100644
--- a/tests/migrations/test_executor.py
+++ b/tests/migrations/test_executor.py
@@ -16,7 +16,7 @@
 )
 from django.test.utils import isolate_lru_cache
 
-from .test_base import MigrationTestBase
+from .base import MigrationTestBase
 
 
 @modify_settings(INSTALLED_APPS={"append": "migrations2"})
diff --git a/tests/migrations/test_loader.py b/tests/migrations/test_loader.py
index 52aeb8c21bbd..ba10e7ce935a 100644
--- a/tests/migrations/test_loader.py
+++ b/tests/migrations/test_loader.py
@@ -17,7 +17,7 @@
 from django.db.migrations.recorder import MigrationRecorder
 from django.test import TestCase, modify_settings, override_settings
 
-from .test_base import MigrationTestBase
+from .base import MigrationTestBase
 
 
 class RecorderTests(TestCase):
diff --git a/tests/migrations/test_multidb.py b/tests/migrations/test_multidb.py
index 14667bbdc38d..b239e7c5ea25 100644
--- a/tests/migrations/test_multidb.py
+++ b/tests/migrations/test_multidb.py
@@ -2,7 +2,7 @@
 from django.db.migrations.state import ProjectState
 from django.test import override_settings
 
-from .test_base import OperationTestBase
+from .base import OperationTestBase
 
 
 class AgnosticRouter:
diff --git a/tests/migrations/test_operations.py b/tests/migrations/test_operations.py
index b3d5481267aa..939520d79245 100644
--- a/tests/migrations/test_operations.py
+++ b/tests/migrations/test_operations.py
@@ -19,8 +19,8 @@
 )
 from django.test.utils import CaptureQueriesContext
 
+from .base import OperationTestBase
 from .models import FoodManager, FoodQuerySet, UnicodeModel
-from .test_base import OperationTestBase
 
 
 class Mixin:
diff --git a/tests/migrations/test_optimizer.py b/tests/migrations/test_optimizer.py
index 195a74072a56..c2c80d309e82 100644
--- a/tests/migrations/test_optimizer.py
+++ b/tests/migrations/test_optimizer.py
@@ -3,8 +3,8 @@
 from django.db.migrations.optimizer import MigrationOptimizer
 from django.db.models.functions import Abs
 
+from .base import OptimizerTestBase
 from .models import EmptyManager, UnicodeModel
-from .test_base import OptimizerTestBase
 
 
 class OptimizerTests(OptimizerTestBase):
diff --git a/tests/postgres_tests/test_operations.py b/tests/postgres_tests/test_operations.py
index 551898c80a23..7372101e4009 100644
--- a/tests/postgres_tests/test_operations.py
+++ b/tests/postgres_tests/test_operations.py
@@ -1,6 +1,6 @@
 import unittest
 
-from migrations.test_base import OperationTestBase, OptimizerTestBase
+from migrations.base import OperationTestBase, OptimizerTestBase
 
 from django.db import IntegrityError, NotSupportedError, connection, transaction
 from django.db.migrations.operations import RemoveIndex, RenameIndex