diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 84ae235..5c1d364 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,6 +22,10 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt install python3-tk python3-dev python3-setuptools tcl
+          
+      - name: Install tk on ubuntu
+        if: ${{ matrix.config.os == 'windows-2019'}}
+        run: pip install pywin32
 
       - name: Checkout code
         uses: actions/checkout@v3
@@ -36,8 +40,7 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r requirements.txt
           pip install pyinstaller
-          pip install pillow  
-          pip install pywin32
+          pip install pillow
 
       - name: Build with pyinstaller for ${{ matrix.config.os }}
         run: pyinstaller scripts/main.py --onefile --noconsole --icon=img/icon.ico --name=PyHolofotes