diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9f93d004d..0da934035 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -94,17 +94,22 @@ jobs:
       # Install Python.
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.7'
+          python-version: '3.6'
+        
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install sphinx sphinx_rtd_theme sphinx-tabs sphinxext-opengraph doc8
           pip install -r requirements.txt
-          sudo apt install -y texlive-latex-recommended texlive-fonts-recommended texlive-latex-extra latexmk texlive-lang-greek texlive-luatex texlive-xetex texlive-fonts-extra dvipng graphviz
+          
+      - name: Install LaTeX and other system dependencies
+        run: sudo apt install -y texlive-latex-recommended texlive-fonts-recommended texlive-latex-extra latexmk texlive-lang-greek texlive-luatex texlive-xetex texlive-fonts-extra dvipng graphviz
+          
       - name: Check the docs
         run: |
-          ls
           make linkcheck
+          make lint
+          
       - name: Build the docs
         run: |
           make html