diff --git a/sanic/compat.py b/sanic/compat.py
index e0271747..3a9c372a 100644
--- a/sanic/compat.py
+++ b/sanic/compat.py
@@ -133,7 +133,7 @@ if use_trio:  # pragma: no cover
         return trio.Path(path).stat()
 
     open_async = trio.open_file
-    CancelledErrors = (asyncio.CancelledError, trio.Cancelled)
+    CancelledErrors: tuple[type[BaseException], ...] = (asyncio.CancelledError, trio.Cancelled)
 else:
     if PYPY_IMPLEMENTATION:
         pypy_os_module_patch()
diff --git a/sanic/models/protocol_types.py b/sanic/models/protocol_types.py
index e2c70c4d..7d40a44e 100644
--- a/sanic/models/protocol_types.py
+++ b/sanic/models/protocol_types.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from asyncio import BaseTransport
-from typing import TYPE_CHECKING, AnyStr
+from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
     from sanic.http.constants import HTTP
@@ -12,10 +12,10 @@ from typing import Protocol
 
 
 class HTMLProtocol(Protocol):
-    def __html__(self) -> AnyStr:
+    def __html__(self) -> str:
         ...
 
-    def _repr_html_(self) -> AnyStr:
+    def _repr_html_(self) -> str:
         ...
 
 
diff --git a/sanic/server/protocols/base_protocol.py b/sanic/server/protocols/base_protocol.py
index 8678f471..087694a1 100644
--- a/sanic/server/protocols/base_protocol.py
+++ b/sanic/server/protocols/base_protocol.py
@@ -51,8 +51,8 @@ class SanicProtocol(asyncio.Protocol):
         self._can_write = asyncio.Event()
         self._can_write.set()
         self._unix = unix
-        self._time = 0.0  # type: float
-        self._task = None  # type: Optional[asyncio.Task]
+        self._time = 0.0
+        self._task: asyncio.Task | None = None
         self._data_received = asyncio.Event()
 
     @property