diff --git a/bump_pydantic/codemods/class_def_visitor.py b/bump_pydantic/codemods/class_def_visitor.py
index f911fc3..b97aa0e 100644
--- a/bump_pydantic/codemods/class_def_visitor.py
+++ b/bump_pydantic/codemods/class_def_visitor.py
@@ -9,6 +9,7 @@
 1.1. If it is, and if any `base_model_cls` is found, remove from `cls`, and add to `base_model_cls`.
 1.2. If it's not, it continues on the `cls`
 """
+
 from __future__ import annotations
 
 from collections import defaultdict
diff --git a/bump_pydantic/codemods/replace_config.py b/bump_pydantic/codemods/replace_config.py
index f1c6ff7..9eef776 100644
--- a/bump_pydantic/codemods/replace_config.py
+++ b/bump_pydantic/codemods/replace_config.py
@@ -9,7 +9,9 @@
 PREFIX_COMMENT = "# TODO[pydantic]: "
 REFACTOR_COMMENT = f"{PREFIX_COMMENT}We couldn't refactor this class, please create the `model_config` manually."
 REMOVED_KEYS_COMMENT = f"{PREFIX_COMMENT}The following keys were removed: {{keys}}."
-INHERIT_CONFIG_COMMENT = f"{PREFIX_COMMENT}The `Config` class inherits from another class, please create the `model_config` manually."  # noqa: E501
+INHERIT_CONFIG_COMMENT = (
+    f"{PREFIX_COMMENT}The `Config` class inherits from another class, please create the `model_config` manually."
+)
 CHECK_LINK_COMMENT = "# Check https://docs.pydantic.dev/dev-v2/migration/#changes-to-config for more information."
 
 REMOVED_KEYS = [
diff --git a/bump_pydantic/codemods/replace_imports.py b/bump_pydantic/codemods/replace_imports.py
index 81e6ca7..6030224 100644
--- a/bump_pydantic/codemods/replace_imports.py
+++ b/bump_pydantic/codemods/replace_imports.py
@@ -7,6 +7,7 @@
 4. `from pydantic.settings import BaseSettings as <name>`  # TODO: This is not working.
 5. `import pydantic` -> `pydantic.BaseSettings`
 """
+
 from __future__ import annotations
 
 from dataclasses import dataclass
diff --git a/bump_pydantic/codemods/validator.py b/bump_pydantic/codemods/validator.py
index a2fe7fc..2a771b9 100644
--- a/bump_pydantic/codemods/validator.py
+++ b/bump_pydantic/codemods/validator.py
@@ -7,7 +7,9 @@
 from libcst.codemod.visitors import AddImportsVisitor, RemoveImportsVisitor
 
 PREFIX_COMMENT = "# TODO[pydantic]: "
-REFACTOR_COMMENT = f"{PREFIX_COMMENT}We couldn't refactor the `{{old_name}}`, please replace it by `{{new_name}}` manually."  # noqa: E501
+REFACTOR_COMMENT = (
+    f"{PREFIX_COMMENT}We couldn't refactor the `{{old_name}}`, please replace it by `{{new_name}}` manually."
+)
 VALIDATOR_COMMENT = REFACTOR_COMMENT.format(old_name="validator", new_name="field_validator")
 ROOT_VALIDATOR_COMMENT = REFACTOR_COMMENT.format(old_name="root_validator", new_name="model_validator")
 CHECK_LINK_COMMENT = "# Check https://docs.pydantic.dev/dev-v2/migration/#changes-to-validators for more information."
diff --git a/pyproject.toml b/pyproject.toml
index 9e50f7b..4de1cc8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,18 +48,13 @@ dependencies = [
   "pytest",
   "rich",
   "rtoml",
-  "ruff==0.1.9",
+  "ruff==0.3.4",
 ]
 
 [tool.hatch.envs.default.scripts]
 cov = ["test-cov", "cov-report"]
 cov-report = ["- coverage combine", "coverage report"]
-format = ["black {args:.}", "ruff --fix {args:.}"]
-lint = [
-  "ruff {args:.}",
-  "black --check --diff {args:.}",
-  "mypy {args:bump_pydantic tests}",
-]
+lint = ["ruff format {args:.}", "ruff check --fix --exit-non-zero-on-fix {args:.}", "mypy {args:bump_pydantic tests}"]
 test = "pytest {args:tests}"
 test-cov = "coverage run -m pytest {args:tests}"
 
@@ -72,6 +67,10 @@ skip-string-normalization = true
 target-version = ["py38"]
 
 [tool.ruff]
+line-length = 120
+target-version = 'py38'
+
+[tool.ruff.lint]
 extend-select = [
   'A',
   'B',
@@ -88,9 +87,7 @@ extend-select = [
 ]
 ignore = ['B008'] # That's how Typer works.
 isort = { known-first-party = ['bump_pydantic', 'tests'] }
-line-length = 120
 mccabe = { max-complexity = 14 }
-target-version = 'py38'
 
 [tool.pytest.ini_options]
 xfail_strict = true