diff --git a/pandas/tests/indexes/common.py b/pandas/tests/indexes/common.py
index b657d8d16df81..1ac6370860ba6 100644
--- a/pandas/tests/indexes/common.py
+++ b/pandas/tests/indexes/common.py
@@ -1,4 +1,5 @@
 import gc
+from typing import Optional, Type
 
 import numpy as np
 import pytest
@@ -30,7 +31,7 @@
 class Base:
     """ base class for index sub-class tests """
 
-    _holder = None
+    _holder = None  # type: Optional[Type[Index]]
     _compat_props = ["shape", "ndim", "size", "nbytes"]
 
     def test_pickle_compat_construction(self):
diff --git a/setup.cfg b/setup.cfg
index f7920fb61b942..d4657100c1291 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -148,33 +148,12 @@ ignore_errors=True
 [mypy-pandas.tests.extension.json.test_json]
 ignore_errors=True
 
-[mypy-pandas.tests.indexes.datetimes.test_datetimelike]
-ignore_errors=True
-
-[mypy-pandas.tests.indexes.interval.test_base]
-ignore_errors=True
-
 [mypy-pandas.tests.indexes.interval.test_interval_tree]
 ignore_errors=True
 
-[mypy-pandas.tests.indexes.period.test_period]
-ignore_errors=True
-
 [mypy-pandas.tests.indexes.test_base]
 ignore_errors=True
 
-[mypy-pandas.tests.indexes.test_category]
-ignore_errors=True
-
-[mypy-pandas.tests.indexes.test_numeric]
-ignore_errors=True
-
-[mypy-pandas.tests.indexes.test_range]
-ignore_errors=True
-
-[mypy-pandas.tests.indexes.timedeltas.test_timedelta]
-ignore_errors=True
-
 [mypy-pandas.tests.indexing.test_loc]
 ignore_errors=True