diff --git a/.github/workflows/main-publish.yml b/.github/workflows/main-publish.yml
index e64ffe7e..da4c8576 100644
--- a/.github/workflows/main-publish.yml
+++ b/.github/workflows/main-publish.yml
@@ -24,6 +24,9 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+          with:
+             python-version: 3.6
       - name: Publish
         env:
           PYPI_USER: ${{ secrets.PYPI_USER }}