From 6ff3f303a76718d095a8ac95b79c09fa0c31c38a Mon Sep 17 00:00:00 2001
From: Glinte <96855131+Glinte@users.noreply.github.com>
Date: Sun, 12 Oct 2025 12:28:23 +0800
Subject: [PATCH] Fix implicit `None`

---
 ordered_set/__init__.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ordered_set/__init__.py b/ordered_set/__init__.py
index ccd1cbf..9bb5850 100644
--- a/ordered_set/__init__.py
+++ b/ordered_set/__init__.py
@@ -14,6 +14,7 @@
     List,
     MutableSet,
     AbstractSet,
+    Optional,
     Sequence,
     Set,
     TypeVar,
@@ -62,7 +63,7 @@ class OrderedSet(MutableSet[T], Sequence[T]):
         OrderedSet([1, 2, 3])
     """
 
-    def __init__(self, initial: OrderedSetInitializer[T] = None):
+    def __init__(self, initial: Optional[OrderedSetInitializer[T]] = None):
         self.items: List[T] = []
         self.map: Dict[T, int] = {}
         if initial is not None: