diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 454a070..3401d98 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -36,7 +36,7 @@ jobs:
     - name: create package
       run: |
         pyrcc5 resources.qrc -o resources.py
-        pyinstaller --onefile --windowed --name="BlipBlop" -i icons/blipblop_logo.icns --add-data="icons/blipblop_logo.icns:." --add-data="resources.py:." blipblop.py
+        pyinstaller --onefile --windowed --name="BlipBlop" --osx-bundle-identifier="de.uni-tuebingen.neuroetho.blipblop" -i icons/blipblop_logo.icns --add-data="icons/blipblop_logo.icns:." --add-data="resources.py:." blipblop.py
     
     - name: Upload a Build Artifact
       uses: actions/upload-artifact@v2.2.2
diff --git a/blipblop/ui/__pycache__/__init__.cpython-38.pyc b/blipblop/ui/__pycache__/__init__.cpython-38.pyc
deleted file mode 100644
index 7eaab7d..0000000
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diff --git a/blipblop/ui/__pycache__/about.cpython-38.pyc b/blipblop/ui/__pycache__/about.cpython-38.pyc
deleted file mode 100644
index cee00e8..0000000
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diff --git a/blipblop/ui/__pycache__/help.cpython-38.pyc b/blipblop/ui/__pycache__/help.cpython-38.pyc
deleted file mode 100644
index 1662bf9..0000000
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