diff --git a/setup.cfg b/setup.cfg
index 671b0812..27f18be4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -8,6 +8,12 @@ disallow_any_generics = True
 ignore_missing_imports = True
 no_implicit_optional = True
 show_error_codes = True
+warn_unused_configs = True
+disallow_subclassing_any = True
+check_untyped_defs = True
+disallow_untyped_decorators = True
+warn_redundant_casts = True
+strict_concatenate = True
 
 [mypy-tests.*]
 disallow_untyped_defs = False