diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f5d94dc490..2bf54cd589 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,7 +20,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-          python-version: '3.x'
+          python-version: '3.8'
     - name: Install packages
       run: sudo apt-get -y install zip pandoc man
     - name: Bump version