diff --git a/vllm/distributed/kv_transfer/kv_connector/v1/multi_connector.py b/vllm/distributed/kv_transfer/kv_connector/v1/multi_connector.py
index cea454a0b597..0aabb260fd3d 100644
--- a/vllm/distributed/kv_transfer/kv_connector/v1/multi_connector.py
+++ b/vllm/distributed/kv_transfer/kv_connector/v1/multi_connector.py
@@ -40,7 +40,7 @@ class MultiConnector(KVConnectorBase_V1):
 
     def __init__(self, vllm_config: "VllmConfig", role: KVConnectorRole):
         super().__init__(vllm_config=vllm_config, role=role)
-        self._connectors = []
+        self._connectors: list[KVConnectorBase_V1] = []
         ktcs = vllm_config.kv_transfer_config.kv_connector_extra_config.get(
             "connectors")
         assert ktcs is not None