diff --git a/pyproject.toml b/pyproject.toml
index 5d83c0f0f..94cef1453 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ include = ["/uvicorn"]
 select = ["E", "F", "I"]
 ignore = ["B904", "B028"]
 
-[tool.ruff.isort]
+[tool.ruff.lint.isort]
 combine-as-imports = true
 
 [tool.mypy]
diff --git a/requirements.txt b/requirements.txt
index ab8274208..1ac571f9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,8 +14,7 @@ build==1.0.3
 twine==4.0.2
 
 # Testing
-black==23.7.0
-ruff==0.0.286
+ruff==0.1.4
 pytest==7.4.3
 pytest-mock==3.11.1
 mypy==1.6.1
diff --git a/scripts/check b/scripts/check
index e8567468b..15748a4e8 100755
--- a/scripts/check
+++ b/scripts/check
@@ -10,7 +10,7 @@ export SOURCE_FILES="uvicorn tests"
 set -x
 
 ./scripts/sync-version
-${PREFIX}black --check --diff --target-version=py38 $SOURCE_FILES
+${PREFIX}ruff format --check --diff $SOURCE_FILES
 ${PREFIX}mypy $SOURCE_FILES
 ${PREFIX}ruff check $SOURCE_FILES
 ${PREFIX}python -m tools.cli_usage --check
diff --git a/scripts/lint b/scripts/lint
index 9f0cacd2c..2b6904b3c 100755
--- a/scripts/lint
+++ b/scripts/lint
@@ -9,6 +9,6 @@ export SOURCE_FILES="uvicorn tests"
 
 set -x
 
-${PREFIX}black --target-version=py38 $SOURCE_FILES
+${PREFIX}ruff format $SOURCE_FILES
 ${PREFIX}ruff --fix $SOURCE_FILES
 ${PREFIX}python -m tools.cli_usage
diff --git a/tests/protocols/test_websocket.py b/tests/protocols/test_websocket.py
index 9f98e3c7b..64bda3450 100644
--- a/tests/protocols/test_websocket.py
+++ b/tests/protocols/test_websocket.py
@@ -71,15 +71,18 @@ def app(scope):
             pass  # ok, wsproto 0.13
         else:
             assert response.status_code == 400
-            assert response.text.lower().strip().rstrip(".") in [
-                "missing sec-websocket-key header",
-                "missing sec-websocket-version header",  # websockets
-                "missing or empty sec-websocket-key header",  # wsproto
-                "failed to open a websocket connection: missing "
-                "sec-websocket-key header",
-                "failed to open a websocket connection: missing or empty "
-                "sec-websocket-key header",
-            ]
+            assert (
+                response.text.lower().strip().rstrip(".")
+                in [
+                    "missing sec-websocket-key header",
+                    "missing sec-websocket-version header",  # websockets
+                    "missing or empty sec-websocket-key header",  # wsproto
+                    "failed to open a websocket connection: missing "
+                    "sec-websocket-key header",
+                    "failed to open a websocket connection: missing or empty "
+                    "sec-websocket-key header",
+                ]
+            )
 
 
 @pytest.mark.anyio
diff --git a/tests/test_config.py b/tests/test_config.py
index 17ab097e6..200e88dc6 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -97,10 +97,9 @@ def test_reload_dir_is_set(
             app="tests.test_config:asgi_app", reload=True, reload_dirs=[str(app_dir)]
         )
         assert len(caplog.records) == 1
-        assert (
-            caplog.records[-1].message
-            == f"Will watch for changes in these directories: {[str(app_dir)]}"
-        )
+        assert caplog.records[
+            -1
+        ].message == f"Will watch for changes in these directories: {[str(app_dir)]}"
         assert config.reload_dirs == [app_dir]
         config = Config(
             app="tests.test_config:asgi_app", reload=True, reload_dirs=str(app_dir)