diff --git a/.github/workflows/macOS.yml b/.github/workflows/macOS.yml
index 5ab193a8..c51ecaf2 100644
--- a/.github/workflows/macOS.yml
+++ b/.github/workflows/macOS.yml
@@ -2,6 +2,12 @@ name: macOS
 
 on: [push, pull_request]
 
+env:
+  PYTHON_VER: '3.7.6'
+  PYTHON_VER_SHORT: '3.7'
+  PYTHON_VER_SHORT_COMPACT: '37'
+  PYOTHERSIDE_VER: '1.5.9'
+
 jobs:
   build:
 
@@ -18,20 +24,20 @@ jobs:
 
       - name: Build custom Python as a framework
         run: |
-          wget https://www.python.org/ftp/python/3.7.6/Python-3.7.6.tgz
-          tar -xzvf Python-3.7.6.tgz
-          cd Python-3.7.6
+          wget https://www.python.org/ftp/python/$PYTHON_VER/Python-$PYTHON_VER.tgz
+          tar -xzvf Python-$PYTHON_VER.tgz
+          cd Python-$PYTHON_VER
           ./configure CPPFLAGS="-I$(brew --prefix openssl@1.1)/include" LDFLAGS="-L$(brew --prefix openssl@1.1)/lib" MACOSX_DEPLOYMENT_TARGET=10.13 CC=clang --enable-framework --with-openssl=$(brew --prefix openssl@1.1) --enable-optimizations
           sudo make altinstall
           cd ..
 
       - name: Download, build, install pyotherside QML plugin
         run: |
-          wget https://github.com/thp/pyotherside/archive/1.5.9.tar.gz
-          tar -xzvf 1.5.9.tar.gz
-          echo "DEFINES += QT_NO_DEBUG_OUTPUT" >> pyotherside-1.5.9/src/src.pro
-          cd pyotherside-1.5.9
-          qmake PYTHON_CONFIG=/Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7m-config
+          wget https://github.com/thp/pyotherside/archive/$PYOTHERSIDE_VER.tar.gz
+          tar -xzvf $PYOTHERSIDE_VER.tar.gz
+          echo "DEFINES += QT_NO_DEBUG_OUTPUT" >> pyotherside-$PYOTHERSIDE_VER/src/src.pro
+          cd pyotherside-$PYOTHERSIDE_VER
+          qmake PYTHON_CONFIG=/Library/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/bin/python$PYTHON_VER_SHORTm-config
           make
           sudo make install
           cd ..
@@ -58,19 +64,19 @@ jobs:
 
       - name: Move python dependencies to site-packages (required by codesign)
         run: |
-          rsync -a yubioath-desktop.app/Contents/MacOS/pymodules/* yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/
+          rsync -a yubioath-desktop.app/Contents/MacOS/pymodules/* yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/lib/python$PYTHON_VER_SHORT/site-packages/
           rm -rf yubioath-desktop.app/Contents/MacOS/pymodules
 
       - name: Point pyotherside to relative Python
         run: |
-          sudo install_name_tool -change /Library/Frameworks/Python.framework/Versions/3.7/Python @executable_path/../Frameworks/Python.framework/Versions/3.7/Python yubioath-desktop.app/Contents/PlugIns/quick/libpyothersideplugin.dylib
+          sudo install_name_tool -change /Library/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/Python @executable_path/../Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/Python yubioath-desktop.app/Contents/PlugIns/quick/libpyothersideplugin.dylib
 
       - name: Point custom Python share objects to relative openssl (from brew)
         run: |
-          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libcrypto.1.1.dylib @executable_path/../Frameworks/libcrypto.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib-dynload/_ssl.cpython-37m-darwin.so
-          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libssl.1.1.dylib @executable_path/../Frameworks/libssl.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib-dynload/_ssl.cpython-37m-darwin.so
-          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libcrypto.1.1.dylib @executable_path/../Frameworks/libcrypto.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib-dynload/_hashlib.cpython-37m-darwin.so
-          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libssl.1.1.dylib @executable_path/../Frameworks/libssl.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib-dynload/_hashlib.cpython-37m-darwin.so
+          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libcrypto.1.1.dylib @executable_path/../Frameworks/libcrypto.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/lib/python$PYTHON_VER_SHORT/lib-dynload/_ssl.cpython-$PYTHON_VER_SHORT_COMPACTm-darwin.so
+          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libssl.1.1.dylib @executable_path/../Frameworks/libssl.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/lib/python$PYTHON_VER_SHORT/lib-dynload/_ssl.cpython-$PYTHON_VER_SHORT_COMPACTm-darwin.so
+          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libcrypto.1.1.dylib @executable_path/../Frameworks/libcrypto.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/lib/python$PYTHON_VER_SHORT/lib-dynload/_hashlib.cpython-$PYTHON_VER_SHORT_COMPACTm-darwin.so
+          sudo install_name_tool -change /usr/local/opt/openssl@1.1/lib/libssl.1.1.dylib @executable_path/../Frameworks/libssl.1.1.dylib yubioath-desktop.app/Contents/Frameworks/Python.framework/Versions/$PYTHON_VER_SHORT/lib/python$PYTHON_VER_SHORT/lib-dynload/_hashlib.cpython-$PYTHON_VER_SHORT_COMPACTm-darwin.so
           sudo install_name_tool -change /usr/local/Cellar/openssl@1.1/1.1.1d/lib/libcrypto.1.1.dylib @executable_path/../Frameworks/libcrypto.1.1.dylib yubioath-desktop.app/Contents/Frameworks/libssl.1.1.dylib
 
       - name: Point ykpers dependencies to relative dylibs