diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4beb53..7ddfbd8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,5 +25,6 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material 
+      - run: pip install mkdocs-material
+      - run: pip install mkdocs-glightbox 
       - run: mkdocs gh-deploy --force