diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 69b9994..6568f83 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -26,8 +26,7 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: apt-get install pngquant
-
+      - run: sudo apt-get install pngquant
       - run: pip install poetry
       - run: poetry install --only docs
       - run: pip install git+https://${GH_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git