diff --git a/pyproject.toml b/pyproject.toml
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ classifiers = [
     'Operating System :: OS Independent',
     'Topic :: Software Development :: Version Control',
     'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
-    'Programming Language :: Python :: 3.10',
+    'Programming Language :: Python :: 3.11',
 ]
 
 [project.entry-points."paste.app_factory"]
@@ -65,7 +65,15 @@ dependencies = {file = ["requirements.tx
 optional-dependencies.tests = {file = ["requirements_test.txt"]}
 
 [tool.ruff]
-lint.select = [
+# Line length max same as Black.
+line-length = 120
+
+# Assume Python 3.11
+target-version = "py311"
+
+
+[tool.ruff.lint]
+select = [
     # Pyflakes
     "F",
     # Pycodestyle
@@ -74,17 +82,15 @@ lint.select = [
     # isort
     "I001"
 ]
-lint.ignore = [
+
+ignore = [
     "E501",  # line too long, handled by black
 ]
-# Same as Black.
-line-length = 120
 
 [tool.ruff.lint.isort]
 known-first-party = ["rhodecode"]
 
 [tool.ruff.format]
-
 # Like Black, use double quotes for strings.
 quote-style = "double"