diff --git a/google/api_core/exceptions.py b/google/api_core/exceptions.py
index 5b25d124..e3eb696c 100644
--- a/google/api_core/exceptions.py
+++ b/google/api_core/exceptions.py
@@ -517,14 +517,14 @@ def format_http_response_error(
     errors = payload.get("error", {}).get("errors", ())
     # In JSON, details are already formatted in developer-friendly way.
     details = payload.get("error", {}).get("details", ())
-    error_info = list(
+    error_info_list = list(
         filter(
             lambda detail: detail.get("@type", "")
             == "type.googleapis.com/google.rpc.ErrorInfo",
             details,
         )
     )
-    error_info = error_info[0] if error_info else None
+    error_info = error_info_list[0] if error_info_list else None
     message = _format_rest_error_message(error_message, method, url)
 
     exception = from_http_status(
diff --git a/google/api_core/grpc_helpers_async.py b/google/api_core/grpc_helpers_async.py
index 6feb2229..26960456 100644
--- a/google/api_core/grpc_helpers_async.py
+++ b/google/api_core/grpc_helpers_async.py
@@ -152,9 +152,9 @@ class _WrappedStreamStreamCall(
 
 
 # public type alias denoting the return type of async streaming gapic calls
-GrpcAsyncStream = _WrappedStreamResponseMixin[P]
+GrpcAsyncStream = _WrappedStreamResponseMixin
 # public type alias denoting the return type of unary gapic calls
-AwaitableGrpcCall = _WrappedUnaryResponseMixin[P]
+AwaitableGrpcCall = _WrappedUnaryResponseMixin
 
 
 def _wrap_unary_errors(callable_):
diff --git a/google/api_core/retry/retry_unary.py b/google/api_core/retry/retry_unary.py
index ab1b4030..d5dff663 100644
--- a/google/api_core/retry/retry_unary.py
+++ b/google/api_core/retry/retry_unary.py
@@ -83,7 +83,7 @@ def check_if_exists():
 
 
 def retry_target(
-    target: Callable[_P, _R],
+    target: Callable[[], _R],
     predicate: Callable[[Exception], bool],
     sleep_generator: Iterable[float],
     timeout: float | None = None,
diff --git a/google/api_core/retry/retry_unary_async.py b/google/api_core/retry/retry_unary_async.py
index 3bdf6c71..e76a37bb 100644
--- a/google/api_core/retry/retry_unary_async.py
+++ b/google/api_core/retry/retry_unary_async.py
@@ -94,7 +94,7 @@ async def check_if_exists():
 
 
 async def retry_target(
-    target: Callable[_P, Awaitable[_R]],
+    target: Callable[[], Awaitable[_R]],
     predicate: Callable[[Exception], bool],
     sleep_generator: Iterable[float],
     timeout: float | None = None,
diff --git a/noxfile.py b/noxfile.py
index ada6f330..cffef972 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -275,9 +275,7 @@ def pytype(session):
 @nox.session(python=DEFAULT_PYTHON_VERSION)
 def mypy(session):
     """Run type-checking."""
-    # TODO(https://github.com/googleapis/python-api-core/issues/682):
-    # Use the latest version of mypy instead of mypy<1.11.0
-    session.install(".[grpc,async_rest]", "mypy<1.11.0")
+    session.install(".[grpc,async_rest]", "mypy")
     session.install(
         "types-setuptools",
         "types-requests",
diff --git a/tests/asyncio/test_grpc_helpers_async.py b/tests/asyncio/test_grpc_helpers_async.py
index d8f20ae4..aa8d5d10 100644
--- a/tests/asyncio/test_grpc_helpers_async.py
+++ b/tests/asyncio/test_grpc_helpers_async.py
@@ -319,7 +319,7 @@ def test_awaitable_grpc_call():
     """
     AwaitableGrpcCall type should be an Awaitable and a grpc.aio.Call.
     """
-    instance = grpc_helpers_async.AwaitableGrpcCall[int]()
+    instance = grpc_helpers_async.AwaitableGrpcCall()
     assert isinstance(instance, grpc.aio.Call)
     # should implement __await__
     assert hasattr(instance, "__await__")