diff --git a/vllm/entrypoints/disaggregated/types.py b/vllm/entrypoints/disaggregated/types.py
index 73f9bbf975480..0a2b26985ae13 100644
--- a/vllm/entrypoints/disaggregated/types.py
+++ b/vllm/entrypoints/disaggregated/types.py
@@ -1,7 +1,9 @@
 # SPDX-License-Identifier: Apache-2.0
 
+from typing import Optional
+
 import msgspec
-from typing import List, Optional
+
 from vllm import SamplingParams
 
 # NOTE FOR DEVELOPERS:
@@ -9,23 +11,28 @@ from vllm import SamplingParams
 # SETUP WE WILL USE TCP. WE CANNOT USE PICKLE OTHERWISE
 # WE RISK REMOTE CODE EXECUTION FROM UNSTRUSTED USERS.
 
-class PDRequest(msgspec.Struct,
-              array_like=True,  # type: ignore[call-arg]
-              omit_defaults=True,  # type: ignore[call-arg]
-              gc=False):  # type: ignore[call-arg]
+
+class PDRequest(
+        msgspec.Struct,
+        array_like=True,  # type: ignore[call-arg]
+        omit_defaults=True,  # type: ignore[call-arg]
+        gc=False):  # type: ignore[call-arg]
     request_id: str
-    prompt_token_ids: List[int]
+    prompt_token_ids: list[int]
     sampling_params: SamplingParams
     # TODO: support multimodal inputs.
 
-class PDResponse(msgspec.Struct,
-              array_like=True,  # type: ignore[call-arg]
-              omit_defaults=True,  # type: ignore[call-arg]
-              gc=False):  # type: ignore[call-arg]
+
+class PDResponse(
+        msgspec.Struct,
+        array_like=True,  # type: ignore[call-arg]
+        omit_defaults=True,  # type: ignore[call-arg]
+        gc=False):  # type: ignore[call-arg]
     request_id: str
     success: bool
     text: str
-    token_ids: List[int]
+    token_ids: list[int]
     finish_reason: Optional[str] = None
     stop_reason: Optional[str] = None
-    logprobs = None # TODO
+    # TODO: support full protocol.
+    logprobs = None