diff --git a/.github/workflows/unit-tests-ci.yaml b/.github/workflows/unit-tests-ci.yaml
index d4fdd35b..79aa4057 100644
--- a/.github/workflows/unit-tests-ci.yaml
+++ b/.github/workflows/unit-tests-ci.yaml
@@ -16,11 +16,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        # os: [ubuntu-latest, macOS-latest, windows-latest]
         os: [ubuntu-latest, macOS-latest]
-        # os: [ubuntu-latest]
-        python-version: ['3.9', '3.10', '3.11']
-        # python-version: ['3.10']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
         # mpi: [ 'mpich', 'openmpi', 'intelmpi']
         # mpi: ['openmpi']
 
diff --git a/pyproject.toml b/pyproject.toml
index f43f7762..ce2b0a69 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@
 requires = ["setuptools >= 40.6.0", "wheel", "Cython<3.0.0", "numpy", "scipy"]
 build-backend = "setuptools.build_meta"
 
-[mypy]
+[tool.mypy]
 allow_redefinition = true
 
 [tool.ruff]
@@ -40,4 +40,4 @@ select = [
 ]
 
 [tool.ruff.mccabe]
-max-complexity = 10
\ No newline at end of file
+max-complexity = 15
\ No newline at end of file
diff --git a/tox.ini b/tox.ini
index 4b20049f..741c5327 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,7 @@ envlist =
     py39
     py310
     py311
+    py312
 
 [testenv]
 allowlist_externals =
@@ -51,7 +52,7 @@ commands =
 [flake8]
 max-line-length=140
 docstring-convention=all
-max-complexity = 10
+max-complexity = 15
 exclude =
     .git
     .tox