diff --git a/.flake8 b/.flake8
new file mode 100644
index 00000000..3b645097
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,22 @@
+# flake8 does not support pyproject.toml (https://github.com/PyCQA/flake8/issues/234)
+
+[flake8]
+select = F, W, E, C
+# We should set max line length lower eventually
+max-line-length = 130
+exclude =
+    docs,
+    .tox,
+    .eggs,
+    build
+ignore =
+    F401,F821,F841,E122,E126,E127,E402,E501,E741
+    # F401, # imported but unused
+    # F821, # undefined name
+    # F841, # local variable assigned but never used
+    # E122, # continuation line missing indentation or outdented
+    # E126, # continuation line over-indented for hanging indent
+    # E127, # continuation line over-indented for visual indent
+    # E402, # module level import not at top of file
+    # E501, # line too long (103 > 79 characters)
+    # E741, # ambiguous variable name
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f0d2e56..a72bd987 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,22 +3,47 @@
 
 name: pysiaf CI
 
-on: [push, pull_request]
+on: [ push, pull_request ]
 
 jobs:
-  build:
-
-    runs-on: ubuntu-latest
+  test:
+    name: test (${{ matrix.os }}, Python ${{ matrix.python }})
+    runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
-
+        os: [ ubuntu-latest ]
+        python: [ "3.9", "3.10", "3.11" ]
+        include:
+          - os: macos-latest
+            python: "3.11"
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+          cache: 'pip'
+          cache-dependency-path: 'pyproject.toml'
+      - uses: actions/cache@v3
+        with:
+          path: ${{ env.pythonLocation }}
+          key: test-${{ runner.os }}-${{ env.pythonLocation }}-${{ hashFiles('**/pyproject.toml', '**/setup.*') }}
+      - run: python -m pip install . pytest pytest-xdist
+      - run: pip freeze
+      - run: pytest -n auto
+  test_with_coverage:
+    name: run tests with coverage
+    needs: [ test ]
+    runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-        cache: 'pip'
-        cache-dependency-path: 'pyproject.toml'
-    - run: pip install ".[test]"
-    - run: pytest
\ No newline at end of file
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.9
+      - uses: actions/cache@v3
+        with:
+          path: ${{ env.pythonLocation }}
+          key: test-coverage-${{ runner.os }}-${{ env.pythonLocation }}-${{ hashFiles('**/pyproject.toml', '**/setup.*') }}
+      - run: pip install -e ".[test]" pytest-xdist pytest-cov
+      - run: pip freeze
+      - run: pytest -n auto --cov-report=xml --cov-report=term-missing --cov=.
diff --git a/.github/workflows/ci_cron.yml b/.github/workflows/ci_cron.yml
new file mode 100644
index 00000000..a2046cfd
--- /dev/null
+++ b/.github/workflows/ci_cron.yml
@@ -0,0 +1,38 @@
+
+name: Weekly cron
+
+on:
+  schedule:
+    # Weekly Monday 6AM build
+    - cron: "0 0 * * 1"
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: test (${{ matrix.os }}, Python ${{ matrix.python }})
+    needs: [ style ]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            python: "3.9"
+          - os: macos-latest
+            python: "3.10"
+          - os: ubuntu-latest
+            python: "3.12-dev"
+          - os: macos-latest
+            python: "3.12-dev"
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+      - uses: actions/cache@v3
+        with:
+          path: ${{ env.pythonLocation }}
+          key: test-${{ runner.os }}-${{ env.pythonLocation }}-${{ hashFiles('**/pyproject.toml', '**/setup.*') }}
+      - run: python -m pip install . pytest pytest-xdist
+      - run: pip freeze
+      - run: pytest -n auto