diff --git a/mypy.ini b/mypy.ini
index 9e84878..01e108d 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,16 +1,29 @@
 [mypy]
-warn_return_any = True
-warn_unused_configs = True
-
 disallow_any_unimported = True
-#disallow_any_expr = True
+disallow_any_expr = False
 disallow_any_decorated = True
-#disallow_any_explicit = True
+disallow_any_explicit = False
 disallow_any_generics = True
 disallow_subclassing_any = True
+
 disallow_untyped_calls = True
 disallow_untyped_defs = True
 disallow_incomplete_defs = True
+check_untyped_defs = True
+disallow_untyped_decorators = True
+
+implicit_optional = False
+strict_optional = True
+
+warn_redundant_casts = True
+warn_unused_ignores = True
+warn_no_return = True
+warn_return_any = True
+warn_unreachable = True
+
+strict_concatenate = True
+strict_equality = True
+strict = True
 
 [mypy-edge_tts.list_voices]
 disallow_any_decorated = False
diff --git a/src/edge_tts/__init__.py b/src/edge_tts/__init__.py
index 342ae5e..8ea0ee7 100644
--- a/src/edge_tts/__init__.py
+++ b/src/edge_tts/__init__.py
@@ -5,3 +5,5 @@ __init__ for edge_tts
 from .communicate import Communicate
 from .list_voices import VoicesManager, list_voices
 from .submaker import SubMaker
+
+__all__ = ["Communicate", "VoicesManager", "list_voices", "SubMaker"]