diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index db085d50d..c625fffbb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,57 +1,37 @@
 name: Python CI
-
-on:
+'on':
   pull_request_target:
     branches:
       - '**'
-
 jobs:
   run-ci:
-    runs-on: ${{ matrix.os }}
-    defaults:
-      run:
-        shell: bash
-
-    strategy:
-      matrix:
-        # TODO: add windows matrix
-        os: [macos-latest]
-
+    runs-on: macos-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
 
       - name: Set up Python
         uses: actions/setup-python@v3
         with:
           python-version: '3.10'
-
-      - name: Run tests using the shell script (macOS compatible).
-        if: matrix.os == 'macos-latest'
-        run: SKIP_POETRY_SHELL=1 sh install/install_openadapt.sh
-
-      - name: Checkout code
-        uses: actions/checkout@v3
-
       - name: Install poetry
         uses: snok/install-poetry@v1
         with:
           version: 1.5.1
           virtualenvs-create: true
           virtualenvs-in-project: true
-
       - name: Cache deps
         id: cache-deps
         uses: actions/cache@v2
         with:
           path: .venv
-          key: pydeps-${{ hashFiles('**/poetry.lock') }}
-
+          key: 'pydeps-${{ hashFiles(''**/poetry.lock'') }}'
       - run: poetry install --no-interaction --no-root
         if: steps.cache-deps.outputs.cache-hit != 'true'
-
       - name: Check formatting with Black
         run: poetry run black --preview --check .
-
       - name: Run Flake8
-        run: poetry run flake8
+        run: poetry run flake8 .
diff --git a/openadapt/privacy/__init__.py b/openadapt/privacy/__init__.py
index e69de29bb..d58acf990 100644
--- a/openadapt/privacy/__init__.py
+++ b/openadapt/privacy/__init__.py
@@ -0,0 +1,4 @@
+"""Package for the Privacy API.
+
+Module: __init__.py
+"""
diff --git a/openadapt/privacy/providers/__init__.py b/openadapt/privacy/providers/__init__.py
index e69de29bb..e5e493964 100644
--- a/openadapt/privacy/providers/__init__.py
+++ b/openadapt/privacy/providers/__init__.py
@@ -0,0 +1,4 @@
+"""Package for the Providers.
+
+Module: __init__.py
+"""