diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 610c953..9a5f3f7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,4 +26,5 @@ jobs:
             mkdocs-material-
       - run: pip install mkdocs-material 
       - run: pip install mkdocs-glightbox
+      - run: pip install Pygments
       - run: mkdocs gh-deploy --force