diff --git a/setup.cfg b/.flake8
similarity index 71%
rename from setup.cfg
rename to .flake8
index e8527bd..2561054 100644
--- a/setup.cfg
+++ b/.flake8
@@ -1,7 +1,5 @@
 # flake8 does not support pyproject.toml, see:
 # https://github.com/PyCQA/flake8/issues/234
 [flake8]
-exclude = docs
-max-line-length = 100
-
-
+exclude = docs,venv
+max-line-length = 100
\ No newline at end of file
diff --git a/.github/workflows/test_package.yml b/.github/workflows/test_package.yml
index a1cbc08..fca1aa8 100644
--- a/.github/workflows/test_package.yml
+++ b/.github/workflows/test_package.yml
@@ -4,7 +4,7 @@ on:
   push:
     # The CI is executed on every push on every branch
     branches:
-      - "**"
+      - main
   pull_request:
     # The CI is executed on every pull request to the main branch
     branches:
@@ -22,69 +22,57 @@ jobs:
     # https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources
     runs-on: ubuntu-22.04
 
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10"]
+
     steps:
       # This action sets the current path to the root of your github repo
       - uses: actions/checkout@v3
-      
-      - uses: actions/setup-python@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
         with:
-          python-version: '3.10' 
+          python-version: ${{ matrix.python-version }}
 
       - name: "Install code"
-        run: pip install .[test,docs]
+        run: python -m pip install .[test]
 
       - name: Flake8 code
-        run: flake8 .
+        run: python -m flake8
 
       - name: Mypy check
-        run: |
-           pip install mypy
-           python -m mypy . --exclude=build
-
-      - name: Generate coverage report
-        run: python -m pytest --cov=mypackage test
-
-      - name: Generate html report
-        run: python -m coverage html
-           
-      - name: Upload coverage report as artifact
-        uses: actions/upload-artifact@v3
-        with:
-          name: code-coverage-report
-          path: htmlcov
-          if-no-files-found: error
-
-      - name: Build documentation
-        run: |
-           make doc
-
-      - name: Upload documentation
-        uses: actions/upload-artifact@v3
-        with:
-          name: documentation
-          path: docs/_build/html
-          if-no-files-found: error
-
+        run: python -m mypy
 
   test-code:
     # This code depends on the result of check-code
     needs: check-code
     runs-on: ${{ matrix.os }}
-    
+
     strategy:
       matrix:
-        os: [ubuntu-22.04, windows-latest, macos-12]    
-    
+        os: [ubuntu-22.04, windows-latest, macos-12]
+        python-version: ["3.8", "3.9", "3.10"]
+
     steps:
-      - uses: actions/setup-python@v4
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
         with:
-          python-version: '3.10' 
+          python-version: ${{ matrix.python-version }}
 
       - uses: actions/checkout@v3
-    
+
       - name: "Install mypackage"
         run: pip install .[test]
 
       - name: Run tests
         run: |
-          python -m pytest test/
\ No newline at end of file
+          python -m pytest
+
+      - name: Upload coverage report as artifact
+        if: matrix.os == 'ubuntu-22.04' && matrix.python-version == '3.10'
+        uses: actions/upload-artifact@v3
+        with:
+          name: code-coverage-report
+          path: htmlcov
+          if-no-files-found: error
diff --git a/pyproject.toml b/pyproject.toml
index 1a7ac36..a2c21b8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,4 +40,14 @@ ignore_missing_imports = true # Does not show errors when importing untyped libr
 exclude = [ # We only want mypy to consider files that are not generated in installing or building documentation
     "docs/", 
     "build/"
+]
+files = [  # Folder to which files that should be checked by mypy
+    "src",
+    "test"
+]
+
+[tool.pytest.ini_options]
+addopts = "--cov=mypackage --cov-report html --cov-report term-missing -v"
+testpaths = [
+    "test"
 ]
\ No newline at end of file