diff --git a/mypy.ini b/mypy.ini
index e77ccdb..337f88c 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -13,7 +13,8 @@ enable_error_code =
   ignore-without-code,
   unused-awaitable,
   explicit-override,
-  unimported-reveal
+  unimported-reveal,
+  narrowed-type-not-subtype
 strict = True
 
 [mypy-aiohttp_socks.*]