diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 82c08a66..1360832b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,9 @@ on:
     branches:
     - master
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
   pre-commit:
@@ -33,12 +36,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         include:
           - {os: macos-latest, python-version: '3.7'}
-          - {os: macos-latest, python-version: '3.11'}
+          - {os: macos-latest, python-version: '3.12'}
           - {os: windows-latest, python-version: '3.7'}
-          - {os: windows-latest, python-version: '3.11'}
+          - {os: windows-latest, python-version: '3.12'}
 
     steps:
     - uses: actions/checkout@v4
@@ -63,7 +66,7 @@ jobs:
       uses: codecov/codecov-action@v3
 
     - name: Test docstrings with doctest
-      if: "runner.os == 'Linux' && matrix.python-version == 3.11"
+      if: "runner.os == 'Linux' && matrix.python-version == 3.12"
       run: python -m pytest --doctest-modules src/particle --ignore-glob="src/particle/particle/convert.py"
 
   notebooks:
diff --git a/pyproject.toml b/pyproject.toml
index ef63befe..c40fe7e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -99,6 +99,7 @@ minversion = "6.0"
 testpaths = ["tests"]
 junit_family = "xunit2"
 log_cli_level = "info"
+xfail_strict = true
 addopts = [
     "--benchmark-disable",
     "-ra",
@@ -144,9 +145,11 @@ messages_control.disable = [
 
 
 [tool.ruff]
+src = ["src"]
+
+[tool.ruff.lint]
 select = [
-    "E", "F", "W", # flake8
-    "B", "B904",   # flake8-bugbear
+    "B",            # flake8-bugbear
     "I",           # isort
     "ARG",         # flake8-unused-arguments
     "C4",          # flake8-comprehensions
@@ -164,23 +167,20 @@ select = [
     "YTT",         # flake8-2020
 ]
 ignore = [
-    "B905",
-    "E402",
-    "E501",
-    "RUF001", # Ambiguous unicode
-    "RUF002", # Ambiguous unicode docstring
-    "PLR",    # Design related pylint codes
-    "PT013",  # Importing approx from pytest is fine
-]
-src = ["src"]
-unfixable = [
-  "T20",  # Removes print statements
-  "F841", # Removes unused variables
+    "RUF001",  # Ambiguous unicode
+    "RUF002",  # Ambiguous unicode docstring
+    "PLR2004", # Magic value used in comparison
+    "PLR09",   # Too many X
 ]
 isort.required-imports = ["from __future__ import annotations"]
+mccabe.max-complexity = 24
 
-[tool.ruff.mccabe]
-max-complexity = 24
-
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "src/particle/__main__.py" = ["T20"]
+"tests/**.py" = [
+    "PT013",  # Importing approx from pytest is fine
+]
+
+
+[tool.repo-review]
+ignore = ["RTD"]
diff --git a/src/particle/particle/particle.py b/src/particle/particle/particle.py
index 39934423..7981df3d 100644
--- a/src/particle/particle/particle.py
+++ b/src/particle/particle/particle.py
@@ -193,7 +193,7 @@ class Particle:
         minus_one, converter=_none_or_positive_converter
     )
     _three_charge: Charge | None = attr.ib(Charge.u, converter=Charge)  # charge * 3
-    I: float | None = attr.ib(none_float, converter=_isospin_converter)  # noqa: E741
+    I: float | None = attr.ib(none_float, converter=_isospin_converter)
     # J = attr.ib(None)  # Total angular momentum
     G = attr.ib(Parity.u, converter=Parity)  # Parity: '', +, -, or ?
     P = attr.ib(Parity.u, converter=Parity)  # Space parity