diff --git a/pip_check_reqs/find_extra_reqs.py b/pip_check_reqs/find_extra_reqs.py
index 371885f..45aa313 100644
--- a/pip_check_reqs/find_extra_reqs.py
+++ b/pip_check_reqs/find_extra_reqs.py
@@ -226,7 +226,7 @@ def main(arguments: list[str] | None = None) -> None:
     elif parse_result.verbose:
         level = logging.INFO
     else:
-        level = logging.WARN
+        level = logging.WARNING
     log.setLevel(level)
     common.log.setLevel(level)
 
diff --git a/pip_check_reqs/find_missing_reqs.py b/pip_check_reqs/find_missing_reqs.py
index 7363216..54aaa16 100644
--- a/pip_check_reqs/find_missing_reqs.py
+++ b/pip_check_reqs/find_missing_reqs.py
@@ -209,7 +209,7 @@ def main(arguments: list[str] | None = None) -> None:
     elif parse_result.verbose:
         level = logging.INFO
     else:
-        level = logging.WARN
+        level = logging.WARNING
     log.setLevel(level)
     common.log.setLevel(level)
 
diff --git a/pyproject.toml b/pyproject.toml
index 2ef20ef..9e315e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -92,8 +92,11 @@ strict = true
 
 [tool.ruff]
 
+line-length = 79
 target-version = "py39"
 
+[tool.ruff.lint]
+
 select = ["ALL"]
 
 ignore = [
@@ -115,8 +118,6 @@ ignore = [
     "S101",
 ]
 
-line-length = 79
-
 # Do not automatically remove commented out code.
 # We comment out code during development, and with VSCode auto-save, this code
 # is sometimes annoyingly removed.
diff --git a/test-requirements.txt b/test-requirements.txt
index eb5ac4b..58fe289 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
-ruff==0.1.15
+ruff==0.2.0
 mypy
 pyenchant
 pylint
diff --git a/tests/test_find_extra_reqs.py b/tests/test_find_extra_reqs.py
index 20c96ff..3232226 100644
--- a/tests/test_find_extra_reqs.py
+++ b/tests/test_find_extra_reqs.py
@@ -69,7 +69,7 @@ def test_main_failure(
     source_dir = tmp_path / "source"
     source_dir.mkdir()
 
-    caplog.set_level(logging.WARN)
+    caplog.set_level(logging.WARNING)
 
     with pytest.raises(SystemExit) as excinfo:
         find_extra_reqs.main(
@@ -130,7 +130,7 @@ def test_logging_config(
     for event in [
         (logging.DEBUG, "debug"),
         (logging.INFO, "info"),
-        (logging.WARN, "warn"),
+        (logging.WARNING, "warn"),
     ]:
         find_extra_reqs.log.log(*event)
 
diff --git a/tests/test_find_missing_reqs.py b/tests/test_find_missing_reqs.py
index 7644c21..28c6067 100644
--- a/tests/test_find_missing_reqs.py
+++ b/tests/test_find_missing_reqs.py
@@ -79,7 +79,7 @@ def test_main_failure(
     # We choose `pytest` because we know it is installed.
     source_file.write_text("import pytest")
 
-    caplog.set_level(logging.WARN)
+    caplog.set_level(logging.WARNING)
 
     with pytest.raises(SystemExit) as excinfo:
         find_missing_reqs.main(
@@ -140,7 +140,7 @@ def test_logging_config(
     for event in [
         (logging.DEBUG, "debug"),
         (logging.INFO, "info"),
-        (logging.WARN, "warn"),
+        (logging.WARNING, "warn"),
     ]:
         find_missing_reqs.log.log(*event)