diff --git a/.github/workflows/python-test.yml b/.github/workflows/python-test.yml
index b9acf5d..4baee8b 100644
--- a/.github/workflows/python-test.yml
+++ b/.github/workflows/python-test.yml
@@ -1,56 +1,54 @@
 name: Python test
 
-on: [push]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
     build:
-        runs-on: ubuntu-latest
+        strategy:
+          matrix:
+            os: ["ubuntu-latest", "macos-latest"]
+            python-version: [ "3.9", "3.10", "3.11", "3.12" ]
+            mpi: [ "openmpi" ]  # "mpich", "intelmpi"
+#            exclude:
+#              - os: "macos-latest"
+#                mpi: "intelmpi"
+
+        runs-on: ${{ matrix.os }}
+
         steps:
-            - uses: actions/checkout@v4
-            - name: Set up MPI
-              uses: mpi4py/setup-mpi@v1
-              with:
-                mpi: 'openmpi'
-            - name: Set up Python
-              uses: actions/setup-python@v5
-              with:
-                  python-version: '3.9'
-            - name: Install dependencies
-              run: |
-                  python -m pip install --upgrade pip
-                  pip install ."[test]"
-            - name: Lint with ruff
-              run: |
-                  # Stop the build if there are Python syntax errors or undefined names.
-                  ruff check --output-format=github --select=E9,F63,F7,F82 --target-version=py39 .
-                  # Default set of ruff rules with GitHub Annotations
-                  ruff check --output-format=github --target-version=py39 .
-            - name: Test with pytest and measure coverage
-              run: |
-                coverage run --rcfile=./pyproject.toml -m pytest
-                mpirun -n 8 coverage run --rcfile=./pyproject.toml -m mpi4py -m pytest --with-mpi
-                coverage combine
-                coverage report -m
-                coverage xml
-                genbadge coverage -i coverage.xml -o coverage.svg
-            - name: Verify Changed files
-              uses: tj-actions/verify-changed-files@v19
-              id: verify-changed-files
-              with:
-                files: coverage.svg
-
-            - name: Commit files
-              if: steps.verify-changed-files.outputs.files_changed == 'true'
-              run: |
-                git config --local user.email "github-actions[bot]@users.noreply.github.com"
-                git config --local user.name "github-actions[bot]"
-                git diff
-                git add coverage.svg
-                git commit -m "update coverage badge"
-
-            - name: Push changes
-              if: steps.verify-changed-files.outputs.files_changed == 'true'
-              uses: ad-m/github-push-action@master
-              with:
-                github_token: ${{ secrets.github_token }}
-                branch: ${{ github.ref }}
+          - name: Check out repository
+            uses: actions/checkout@v4
+
+          - name: Setup MPI ${{ matrix.mpi }}
+            uses: mpi4py/setup-mpi@v1
+            with:
+              mpi: ${{ matrix.mpi }}
+
+          - name: Set up Python ${{ matrix.python-version }}
+            uses: actions/setup-python@v5
+            with:
+              python-version: ${{ matrix.python-version }}
+
+          - name: Install dependencies
+            run: |
+                python -m pip install --upgrade pip
+                pip install ."[test]"
+
+          - name: Test with pytest and measure coverage
+            run: |
+              coverage run --rcfile=./pyproject.toml -m pytest
+              mpirun -n 8 coverage run --rcfile=./pyproject.toml -m mpi4py -m pytest --with-mpi
+              coverage combine
+              coverage report -m
+              coverage xml
+
+          - name: Upload coverage reports to Codecov
+            uses: codecov/codecov-action@v4.0.1
+            with:
+              token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/README.md b/README.md
index da03bea..b9cd846 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,7 @@
 [![OpenSSF Best Practices](https://www.bestpractices.dev/projects/7785/badge)](https://www.bestpractices.dev/projects/7785)
 [![](https://img.shields.io/badge/Contact-propulate%40lists.kit.edu-orange)](mailto:propulate@lists.kit.edu)
 [![Documentation Status](https://readthedocs.org/projects/propulate/badge/?version=latest)](https://propulate.readthedocs.io/en/latest/?badge=latest)
-![](./coverage.svg)
-[![pre-commit.ci status](https://results.pre-commit.ci/badge/github/Helmholtz-AI-Energy/propulate/main.svg)](https://results.pre-commit.ci/latest/github/Helmholtz-AI-Energy/propulate/main)
+[![codecov](https://codecov.io/gh/Helmholtz-AI-Energy/propulate/graph/badge.svg?token=ZG6PEXJOIO)](https://codecov.io/gh/Helmholtz-AI-Energy/propulate)[![pre-commit.ci status](https://results.pre-commit.ci/badge/github/Helmholtz-AI-Energy/propulate/main.svg)](https://results.pre-commit.ci/latest/github/Helmholtz-AI-Energy/propulate/main)
 
 # **Click [here](https://www.scc.kit.edu/en/aboutus/16956.php) to watch our 3 min introduction video!**
 
diff --git a/pyproject.toml b/pyproject.toml
index f83b219..e3c1495 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,8 +49,6 @@ dev = [
 
 test = [
     "coverage",
-    "genbadge[coverage]",
-    "ruff",
     "pytest",
     "pytest-cov",
     "pytest-mpi",