diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5881b4803..9f93d004d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -98,7 +98,8 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install sphinx sphinx_rtd_theme sphinx-tabs sphinxext-opengraph
+          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: Check the docs
         run: |