From e790828d393998f695f38472d30806f497d9c63d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micka=C3=ABl?= <MickaelBergem@users.noreply.github.com>
Date: Tue, 17 Oct 2023 19:45:00 +0200
Subject: [PATCH] fix mypy warning when assigning to dataclass_json_config
 (#486)

---
 dataclasses_json/api.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dataclasses_json/api.py b/dataclasses_json/api.py
index 9d05a977..3481e93f 100644
--- a/dataclasses_json/api.py
+++ b/dataclasses_json/api.py
@@ -21,7 +21,7 @@ class DataClassJsonMixin(abc.ABC):
 
     As with other ABCs, it should not be instantiated directly.
     """
-    dataclass_json_config = None
+    dataclass_json_config: Optional[dict] = None
 
     def to_json(self,
                 *,