diff --git a/doc/changelog.rst b/doc/changelog.rst
index cf84843eb7..c8e17bc30b 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -6,9 +6,14 @@ Changes in Version 4.15.1 (2025/09/11)
 
 Version 4.15.1 is a bug fix release.
 
- - Fixed a bug in :meth:`~pymongo.synchronous.encryption.ClientEncryption.encrypt` and :meth:`~pymongo.asynchronous.encryption.AsyncClientEncryption.encrypt`
-   that would cause a ``TypeError`` when using ``pymongocrypt<1.16`` by passing an unsupported ``type_opts`` parameter even if
-   Queryable Encryption text queries beta was not used.
+- Fixed a bug in :meth:`~pymongo.synchronous.encryption.ClientEncryption.encrypt`
+  and :meth:`~pymongo.asynchronous.encryption.AsyncClientEncryption.encrypt`
+  that would cause a ``TypeError`` when using ``pymongocrypt<1.16`` by passing
+  an unsupported ``type_opts`` parameter even if Queryable Encryption text
+  queries beta was not used.
+
+- Fixed a bug in ``AsyncMongoClient`` that caused a ``ServerSelectionTimeoutError``
+  when used with ``uvicorn``, ``FastAPI``, or ``uvloop``.
 
 Issues Resolved
 ...............
@@ -18,7 +23,6 @@ in this release.
 
 .. _PyMongo 4.15.1 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=46486
 
-
 Changes in Version 4.15.0 (2025/09/10)
 --------------------------------------
 
@@ -31,8 +35,10 @@ PyMongo 4.15 brings a number of changes including:
   :attr:`~pymongo.encryption.QueryType.SUBSTRINGPREVIEW`,
   as part of the experimental Queryable Encryption text queries beta.
   ``pymongocrypt>=1.16`` is required for text query support.
-- Added :class:`bson.decimal128.DecimalEncoder` and :class:`bson.decimal128.DecimalDecoder`
-  to support encoding and decoding of BSON Decimal128 values to decimal.Decimal values using the TypeRegistry API.
+- Added :class:`bson.decimal128.DecimalEncoder` and
+  :class:`bson.decimal128.DecimalDecoder`
+  to support encoding and decoding of BSON Decimal128 values to
+  decimal.Decimal values using the TypeRegistry API.
 - Added support for Windows ``arm64`` wheels.
 
 Changes in Version 4.14.1 (2025/08/19)
@@ -40,8 +46,9 @@ Changes in Version 4.14.1 (2025/08/19)
 
 Version 4.14.1 is a bug fix release.
 
- - Fixed a bug in ``MongoClient.append_metadata()`` and ``AsyncMongoClient.append_metadata()``
-   that allowed duplicate ``DriverInfo.name`` to be appended to the metadata.
+- Fixed a bug in ``MongoClient.append_metadata()`` and
+  ``AsyncMongoClient.append_metadata()``
+  that allowed duplicate ``DriverInfo.name`` to be appended to the metadata.
 
 Issues Resolved
 ...............
diff --git a/pymongo/network_layer.py b/pymongo/network_layer.py
index 605b8dde9b..9173130776 100644
--- a/pymongo/network_layer.py
+++ b/pymongo/network_layer.py
@@ -22,7 +22,7 @@
 import struct
 import sys
 import time
-from asyncio import BaseTransport, BufferedProtocol, Future, Protocol, Transport
+from asyncio import BaseProtocol, BaseTransport, BufferedProtocol, Future, Transport
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -250,7 +250,7 @@ def recv_into(self, buffer: bytes) -> int:
         return self.conn.recv_into(buffer)
 
 
-class PyMongoBaseProtocol(Protocol):
+class PyMongoBaseProtocol(BaseProtocol):
     def __init__(self, timeout: Optional[float] = None):
         self.transport: Transport = None  # type: ignore[assignment]
         self._timeout = timeout