diff --git a/langgraph/channels/binop.py b/langgraph/channels/binop.py
index 962ce7140..6ec62fcb9 100644
--- a/langgraph/channels/binop.py
+++ b/langgraph/channels/binop.py
@@ -1,5 +1,5 @@
 from contextlib import contextmanager
-from typing import Annotated, Callable, Generator, Generic, Optional, Sequence, Type
+from typing import Callable, Generator, Generic, Optional, Sequence, Type
 
 from typing_extensions import Self
 
@@ -16,11 +16,7 @@ class BinaryOperatorAggregate(Generic[Value], BaseChannel[Value, Value, Value]):
     ```
     """
 
-    def __init__(
-        self,
-        typ: Type[Value],
-        operator: Callable[[Value, Value], Value],
-    ):
+    def __init__(self, typ: Type[Value], operator: Callable[[Value, Value], Value]):
         self.typ = typ
         self.operator = operator
         try: