diff --git a/mypy.ini b/mypy.ini
index b7dbf390fa8c9..edd36bd27cf55 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -5,9 +5,6 @@ follow_imports=silent
 [mypy-pandas.conftest,pandas.tests.*]
 ignore_errors=True
 
-[mypy-pandas._config.config]
-ignore_errors=True
-
 [mypy-pandas._version]
 ignore_errors=True
 
diff --git a/pandas/_config/config.py b/pandas/_config/config.py
index 688080311cd33..0bbc6ba8c519a 100644
--- a/pandas/_config/config.py
+++ b/pandas/_config/config.py
@@ -51,16 +51,24 @@
 from collections import namedtuple
 from contextlib import contextmanager
 import re
+from typing import Dict, List
 import warnings
 
 DeprecatedOption = namedtuple('DeprecatedOption', 'key msg rkey removal_ver')
 RegisteredOption = namedtuple('RegisteredOption',
                               'key defval doc validator cb')
 
-_deprecated_options = {}  # holds deprecated option metdata
-_registered_options = {}  # holds registered option metdata
-_global_config = {}  # holds the current values for registered options
-_reserved_keys = ['all']  # keys which have a special meaning
+# holds deprecated option metdata
+_deprecated_options = {}  # type: Dict[str, DeprecatedOption]
+
+# holds registered option metdata
+_registered_options = {}  # type: Dict[str, RegisteredOption]
+
+# holds the current values for registered options
+_global_config = {}  # type: Dict[str, str]
+
+# keys which have a special meaning
+_reserved_keys = ['all']  # type: List[str]
 
 
 class OptionError(AttributeError, KeyError):