diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index cfdaba55..74cb0ee4 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,11 +20,7 @@ repos:
     hooks:
       - id: ruff
         args: [--fix, --show-fixes]
-
-  - repo: https://github.com/psf/black
-    rev: 23.10.1
-    hooks:
-      - id: black
+      - id: ruff-format
 
   - repo: https://github.com/pre-commit/mirrors-mypy
     rev: v1.6.1
diff --git a/pyproject.toml b/pyproject.toml
index 68c05828..a0da9f5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,6 @@ version_scheme = "post-release"
 local_scheme = "dirty-tag"
 
 [tool.ruff]
-line-length = 88
 select = [
     "E", "F", "W",  # default flake-8
     "I",            # isort
diff --git a/src/anyio/_backends/_asyncio.py b/src/anyio/_backends/_asyncio.py
index fc027b52..1ab1443c 100644
--- a/src/anyio/_backends/_asyncio.py
+++ b/src/anyio/_backends/_asyncio.py
@@ -317,9 +317,7 @@ def get_callable_name(func: Callable) -> str:
 # Event loop
 #
 
-_run_vars = (
-    WeakKeyDictionary()
-)  # type: WeakKeyDictionary[asyncio.AbstractEventLoop, Any]
+_run_vars: WeakKeyDictionary[asyncio.AbstractEventLoop, Any] = WeakKeyDictionary()
 
 
 def _task_started(task: asyncio.Task) -> bool:
@@ -2072,7 +2070,7 @@ async def run_sync_in_worker_thread(
             _threadpool_idle_workers.set(idle_workers)
             _threadpool_workers.set(workers)
 
-        async with (limiter or cls.current_default_thread_limiter()):
+        async with limiter or cls.current_default_thread_limiter():
             with CancelScope(shield=not cancellable):
                 future: asyncio.Future = asyncio.Future()
                 root_task = find_root_task()
diff --git a/src/anyio/abc/_sockets.py b/src/anyio/abc/_sockets.py
index f7b00b47..b321225a 100644
--- a/src/anyio/abc/_sockets.py
+++ b/src/anyio/abc/_sockets.py
@@ -77,9 +77,9 @@ def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
 
         # Provide local and remote ports for IP based sockets
         if self._raw_socket.family in (AddressFamily.AF_INET, AddressFamily.AF_INET6):
-            attributes[
-                SocketAttribute.local_port
-            ] = lambda: self._raw_socket.getsockname()[1]
+            attributes[SocketAttribute.local_port] = (
+                lambda: self._raw_socket.getsockname()[1]
+            )
             if peername is not None:
                 remote_port = peername[1]
                 attributes[SocketAttribute.remote_port] = lambda: remote_port
diff --git a/src/anyio/to_process.py b/src/anyio/to_process.py
index f3ccef5c..2867d42d 100644
--- a/src/anyio/to_process.py
+++ b/src/anyio/to_process.py
@@ -98,7 +98,7 @@ async def send_raw_command(pickled_cmd: bytes) -> object:
         _process_pool_idle_workers.set(idle_workers)
         get_async_backend().setup_process_pool_exit_at_shutdown(workers)
 
-    async with (limiter or current_default_process_limiter()):
+    async with limiter or current_default_process_limiter():
         # Pop processes from the pool (starting from the most recently used) until we
         # find one that hasn't exited yet
         process: Process
diff --git a/tests/streams/test_text.py b/tests/streams/test_text.py
index 804c8fd3..f1f59099 100644
--- a/tests/streams/test_text.py
+++ b/tests/streams/test_text.py
@@ -31,8 +31,7 @@ async def test_send() -> None:
 
 
 @pytest.mark.xfail(
-    platform.python_implementation() == "PyPy"
-    and sys.pypy_version_info < (7, 3, 2),  # type: ignore[attr-defined]
+    platform.python_implementation() == "PyPy" and sys.pypy_version_info < (7, 3, 2),  # type: ignore[attr-defined]
     reason="PyPy has a bug in its incremental UTF-8 decoder (#3274)",
 )
 async def test_receive_encoding_error() -> None:
diff --git a/tests/test_from_thread.py b/tests/test_from_thread.py
index 168c9086..ab577f7e 100644
--- a/tests/test_from_thread.py
+++ b/tests/test_from_thread.py
@@ -479,7 +479,8 @@ def taskfunc(*, task_status: TaskStatus) -> None:
 
         with start_blocking_portal(anyio_backend_name, anyio_backend_options) as portal:
             future, start_value = portal.start_task(
-                taskfunc, name="testname"  # type: ignore[arg-type]
+                taskfunc,  # type: ignore[arg-type]
+                name="testname",
             )
             assert start_value == "testname"