diff --git a/Makefile b/Makefile
index 3fcab6575ad..9cc8db42795 100644
--- a/Makefile
+++ b/Makefile
@@ -64,12 +64,14 @@ format:
 	black $(FORMAT_FILES)
 	blackdoc $(FORMAT_FILES)
 	ruff check --fix $(FORMAT_FILES)
+	ruff format $(FORMAT_FILES)
 
 check:
 	docformatter --check $(FORMAT_FILES)
 	black --check $(FORMAT_FILES)
 	blackdoc --check $(FORMAT_FILES)
 	ruff check $(FORMAT_FILES)
+	ruff format --check $(FORMAT_FILES)
 
 codespell:
 	@codespell
diff --git a/pygmt/tests/test_basemap.py b/pygmt/tests/test_basemap.py
index 340d19c2647..a78d909cd40 100644
--- a/pygmt/tests/test_basemap.py
+++ b/pygmt/tests/test_basemap.py
@@ -79,7 +79,8 @@ def test_basemap_utm_projection(projection):
     works.
     """
     projection = projection.replace(
-        "EPSG_", "EPSG:"  # workaround Windows not allowing colons in filenames
+        "EPSG_",
+        "EPSG:",  # workaround Windows not allowing colons in filenames
     )
     fig = Figure()
     fig.basemap(region=[-52, -50, -12, -11], projection=projection, frame="afg")
diff --git a/pygmt/tests/test_clib_loading.py b/pygmt/tests/test_clib_loading.py
index f3871b5c7b4..8e295632497 100644
--- a/pygmt/tests/test_clib_loading.py
+++ b/pygmt/tests/test_clib_loading.py
@@ -156,9 +156,9 @@ def test_two_broken_libraries(self, mock_ctypes):  # pylint: disable=unused-argu
         with pytest.raises(GMTCLibNotFoundError, match=msg_regex):
             load_libgmt(lib_fullnames=lib_fullnames)
 
-    def test_load_brokenlib_invalidpath(
+    def test_load_brokenlib_invalidpath(  # pylint: disable=unused-argument
         self, mock_ctypes
-    ):  # pylint: disable=unused-argument
+    ):
         """
         Case 2: broken library + invalid path.
 
@@ -176,36 +176,36 @@ def test_load_brokenlib_invalidpath(
         with pytest.raises(GMTCLibNotFoundError, match=msg_regex):
             load_libgmt(lib_fullnames=lib_fullnames)
 
-    def test_brokenlib_invalidpath_workinglib(
+    def test_brokenlib_invalidpath_workinglib(  # pylint: disable=unused-argument
         self, mock_ctypes
-    ):  # pylint: disable=unused-argument
+    ):
         """
         Case 3: broken library + invalid path + working library.
         """
         lib_fullnames = [self.faked_libgmt1, self.invalid_path, self.loaded_libgmt]
         assert check_libgmt(load_libgmt(lib_fullnames=lib_fullnames)) is None
 
-    def test_invalidpath_brokenlib_workinglib(
+    def test_invalidpath_brokenlib_workinglib(  # pylint: disable=unused-argument
         self, mock_ctypes
-    ):  # pylint: disable=unused-argument
+    ):
         """
         Case 4: invalid path + broken library + working library.
         """
         lib_fullnames = [self.invalid_path, self.faked_libgmt1, self.loaded_libgmt]
         assert check_libgmt(load_libgmt(lib_fullnames=lib_fullnames)) is None
 
-    def test_workinglib_brokenlib_invalidpath(
+    def test_workinglib_brokenlib_invalidpath(  # pylint: disable=unused-argument
         self, mock_ctypes
-    ):  # pylint: disable=unused-argument
+    ):
         """
         Case 5: working library + broken library + invalid path.
         """
         lib_fullnames = [self.loaded_libgmt, self.faked_libgmt1, self.invalid_path]
         assert check_libgmt(load_libgmt(lib_fullnames=lib_fullnames)) is None
 
-    def test_brokenlib_brokenlib_workinglib(
+    def test_brokenlib_brokenlib_workinglib(  # pylint: disable=unused-argument
         self, mock_ctypes
-    ):  # pylint: disable=unused-argument
+    ):
         """
         Case 6: repeating broken libraries + working library.
         """
diff --git a/pyproject.toml b/pyproject.toml
index 9414f2a557b..850664d0db9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -89,6 +89,11 @@ wrap-descriptions = 79
 [tool.ruff]
 line-length = 88  # E501 (line-too-long)
 show-source = true
+
+[tool.ruff.format]
+line-ending = "lf"  # Use UNIX `\n` line endings for all files
+
+[tool.ruff.lint]
 select = [
     "E",    # pycodestyle
     "F",    # pyflakes
@@ -99,14 +104,14 @@ select = [
 ]
 ignore = ["E501"]  # Avoid enforcing line-length violations
 
-[tool.ruff.pycodestyle]
-max-doc-length = 79
+[tool.ruff.lint.isort]
+known-third-party = ["pygmt"]
 
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "__init__.py" = ["F401"]  # Ignore `F401` (unused-import) in all `__init__.py` files
 
-[tool.ruff.isort]
-known-third-party = ["pygmt"]
+[tool.ruff.lint.pycodestyle]
+max-doc-length = 79
 
 [tool.pytest.ini_options]
 minversion = "6.0"