diff --git a/libs/checkpoint/langgraph/checkpoint/serde/base.py b/libs/checkpoint/langgraph/checkpoint/serde/base.py
index 5e4fba5be..58be7e08c 100644
--- a/libs/checkpoint/langgraph/checkpoint/serde/base.py
+++ b/libs/checkpoint/langgraph/checkpoint/serde/base.py
@@ -12,17 +12,13 @@ class SerializerProtocol(Protocol):
     Valid implementations include the `pickle`, `json` and `orjson` modules.
     """
 
-    def dumps(self, obj: Any) -> bytes:
-        ...
+    def dumps(self, obj: Any) -> bytes: ...
 
-    def dumps_typed(self, obj: Any) -> tuple[str, bytes]:
-        ...
+    def dumps_typed(self, obj: Any) -> tuple[str, bytes]: ...
 
-    def loads(self, data: bytes) -> Any:
-        ...
+    def loads(self, data: bytes) -> Any: ...
 
-    def loads_typed(self, data: tuple[str, bytes]) -> Any:
-        ...
+    def loads_typed(self, data: tuple[str, bytes]) -> Any: ...
 
 
 class SerializerCompat(SerializerProtocol):